4 Harley-Davidson Sportster Big Bore 1250 & 1275 Kit Manufacturers

Sportster big bore kits offer major performance increases for both the Sportster 883 and Sportster1200, but who makes these kits and where do you start? Were going to answer those questions in this video by taking a look at 4 different companies producing Sportster Big bore kits. NRHS, S&S Cycle, Revolution Performance and Hammer Performance offer a wide price range and options vary between each company. We'll look at the pricing and the differences in the products between each company to help you decide which one fits your needs and budget.
SUBSCRIBE FOR MORE www.youtube.com....
Random and Funny Videos!!
WEEKND OPs Playlist www.youtube.co....
Bikes on the channel:
Motorcycle: 2016 Harley-Davidson Sportster XL1200CP (Sportster 1200 Custom)
• Harley-Davidson Sports...
Custom Parts Installed:
LED Headlight amzn.to/2LY4NA4
LED Bulbs Front Signals amzn.to/32PjpIT
LED Bulbs Rear Signals amzn.to/2OaqP5j
Smoked Out Turn Signal Lenses amzn.to/2Oaz41m
Vance & Hines Twin Slash 3 slip on exhaust amzn.to/2O9mqQ8
Screamin' Eagle Heavy Breather air cleaner
Vance & Hines FuelPak FP3 amzn.to/2M0tV9r
Harley-Davidson Reach Seat
Harley-Davidson Chrome and Rubber Collection grips
Drag Specialties Offset Clevis Footpeg Conversion Kit
Aftermarket Chrome Foot Pegs amzn.to/30C68SA
After Market Chrome Shifter Peg amzn.to/2LBTTAZ
Aftermarket Chrome Crash Bar amzn.to/308QFhg
Aftermarket Detachable Back Rest
Aftermarket Docking Hardware For Back Rest amzn.to/32RhZ0j
Harley-Davidson Air Flow timing cover
Harley-Davidson Air Flow clutch cover
Screamin' Eagle spark plug wires
Screamin' Eagle spark plugs
Black Front Axle Covers amzn.to/32TrSe1
Flipped Down Stock Mirrors
Motorcycle: 2017 Harley-Davidson Sportster XL1200X (Sportster Forty-Eight)
• 2017 Harley Sportster ...
Custom Parts installed:
Harley-Davidson Factory Security System
LED Headlight amzn.to/2OcFih2
LED Bulbs Front Signals amzn.to/3086pQV
LED Bulbs Rear Signals amzn.to/34VFfw9
Smoked out turn signal lenses amzn.to/2Oaz41m
Vance & Hines Twin Slash 3 slip on exhaust amzn.to/2O9mqQ8
Screamin' Eagle Exteme Billed Air Cleaner (Black)
Vance & Hines FuelPak FP3 amzn.to/2M0tV9r
Harley-Davidson Burst Collection Foot Pegs
Harley-Davidson Burst Collection Grips
Harley-Davidson Burst Collection Shifter Peg
Aftermarket Black Crash Bar amzn.to/32MsUZq
Screamin' Eagle spark plug wires
CNC Front Axle Covers amzn.to/31GGE7W

[@GixxerFoo]

Let me know if you are aware of any other companies producing Sportster big bore kits!! Thank you for watching and supporting!

[@edmacrae4521]

@Lord Tachanka zippers

[@edmacrae4521]

@Lord Tachanka really expensive, if you can get a set of worked heads or s&a super stock heads get the nrhs 88ci kit or the s&a 1458 kit

[@edmacrae4521]

www.sscycle.com/products/1458cc-89-low-compression-sidewinder-big-bore-cylinder-and-piston-kit-for-1986-16-hd-sportster-and-1994-02-buell-models-with-ss-super-stock-heads-natural-aluminum/

[@GixxerFoo]

Lol that's idea, I just need a foundry to produce the cylinders now 🤔

[@GixxerFoo]

I was really surprised that the 88 and 90 inch kits didn't produce crazy numbers over the 1250 and 1275 kits. I thought there would be a major difference at least in torque.

[@Doomzday831]

Every time I think about getting rid of my sportster I can’t do it’s such a great machine!

[@GixxerFoo]

They are some awesome bikes, I absolutely love mine and ride them more often than the big twins.

[@georgecostanza2695]

S&S makes great exhausts, crate engines and other components, but Hammer's 1275 kit takes the win for Sportster upgrades. Honestly, Hammer leads this market and everyone else is just fighting for scraps. They offer very high quality products, lots of options, real world cutting edge r and d, knowledgeable staff providing friendly service, and fair prices. They are so far beyond the competition there's absolutely no reason to consider anyone or anything else, the best choice is crystal clear as far as big bore kits for a Sportster is concerned: Hammer Performance. I don't work for them and they haven't paid me to promote them, but trust me... if you work with Hammer to modify your bike, you'll be singing the same tune.

[@GixxerFoo]

I totally agree, those guys know their stuff and they know how to make a Sportster perform!

[@joetroutt7425]

I thought the whole time I was reading this that it was a hammer pitch and then when you said you weren't hired to promote them convinced me that you are getting some kind of kick back. Sorry but your disclaimer forced me to believe otherwise

[@GixxerFoo]

I wish l was getting something from them, they honestly don't need a sales pitch. The data they provide really tells the story. This is just my personal opinion after researching all the different companies that make big bore or performance kits.

[@joetroutt7425]

@@GixxerFoo I'm sorry. I wasn't referring to you. I was referring to the original poster of this particular thread. George

[@GixxerFoo]

Nah you're good, lol l was oh no if Hammer gave me a kit there would be a full series on it lol. I do this for free for those guys cause l love their products.

[@paulfiore7083]

Since my best friend passed last year you have become my spiritual mechanical guru. We talked engine, all types but especially Harley and air cooled VWs..... since they're basically the same 😊. I was looking for performance mods for my 96 Sportster S and here you are! Thanks!

[@GixxerFoo]

I'm sorry to hear about your friends passing, that's tough and l can only imagine. There's a lot you can do with your 96 Sportster! I love to upgrade to the 2004 and newer cylinders and heads on those bikes while keeping the trap door transmission cases those have!

[@t.s.racing]

As a true Harley Engine Builder, I can honestly say this, that S&S has always rated their performance numbers modestly. Even on the 143 Twin Cam, the real world numbers are much higher than published. The quality is second to none, I can say this honestly as well. No, I don't receive any special treatment from the company, but I truly stand by them. SARGE.

[@GixxerFoo]

Oh no question S&S is the leader in Harley performance products. I don't doubt for a second they are publishing modest numbers. The specs on that 143 and what they claimed had me scratching my head thinking there's more to the story there.

[@EngineeringGoneWrong]

Huge respect for S&S However for Sportsters, Hammer performance takes the cake. Those guys are phenomenal to work with and because of the 1275 kit are squeezing every last HP out of these engines without boring the cases. Then of course if you do bore the cases you can get even more!

[@Wisk86]

Have a 1275 hammer kit ported 883 heads dynatech 2000i ignition mikuni hsr 42 extra clutch plate kit and I wouldn’t ever get anything else ! HAMMER 🔨 IS THE WAY TO GO ! 🔥🔥🤘🤘👍👍

[@GixxerFoo]

With as much knowledge as those guys have and knowing it's gone into their kits, it's hard to choose anything else. I swear those guys know more about the Sportster than Harley-Davidson.

[@Wisk86]

@@GixxerFoo awesome stuff I did the kit in my garage in 6 days by my self I was a little skeptical At first but it’s actually not has hard as people think ! 👍

[@GixxerFoo]

It's really not, especially if you have have the factory service manual. It's got the torque specs, tools and it's step by step. They wrote that manual like someone whose never seen a Harley before could do a job.

[@edwinnaranjo5383]

I did Hammer 1250 and will never be more happy with the decision. Even though i have never work with the other companies, the costumer service is amazing with hammer, even in weekends or in the night. If they see your question they will answer via email. One important thing, it depends on the year of your sporty but in most cases you HAVE to buy an ignition module. And it adds at least 300$ more to the numbers for a "basic" conversion.

[@GixxerFoo]

That's the downside of the "basic package" with the carb bikes is that ignition module, but you gotta get that timing right. Even the fuel injected bikes you'll need a Power Vision for 450 bucks to make sure you don't miss a value on the map they send. Those are awesome, I talked to Aaron about lifters with a cam swap and he was honest with me. He said he has expensive lifters he could sell me if I want but he said I really didn't need them, much respect after that!

[@Dipndots87-ms6ds]

The Power Vision isn't 450 dollars anymore. Crazy that it’s 600 now. I just bought the 1275 110+ package and just sent my heads, throttle body, and manifold in. Ill use the narrow band sensors for break in but i am going to buy the wide band kit for final tuning. Right now HP’s lead time is 7 weeks. I’ll report back when finished.

[@bobkinney2430]

Thanks for the review on these and showing the comparisons.....it's Hammer Time! 1275!

[@GixxerFoo]

Thank you! Honestly l feel like they are the best in the business out there!

[@chrisjohns9631]

Great news everyone! Hammer has just re-released their 90 inch kit!

[@tjsellers3441]

I had a 09 nightster 1200 SEST SE heavy breather and V&H short shots dyno tuned by Milt @ what was Dales Mt Vernon Illinois now called Roadhouse HD the bike made 80hp and 80 ft lbs. No internal mods. All stock. Amazing what a good dyno guy can squeeze out of one.

[@GixxerFoo]

I truly believe Harley really under rates their figures for the 1200, 80/80 is really really good for a stage 1 1200 with the W cams. You had one heck of a dyno guy there!

[@dennishowell6494]

I went with the hammer performance 100 horsepower 1250 kit Sledge ported heads their Billet aluminum intake Mikuni 45 carburetor in my 4 speed Sportster very pleased with the performance

[@GixxerFoo]

Aaron know his stuff! I'd imagine you surprise to people with your ride!

[@shawn9878]

Hammer 1275 with 30* reverse dome pistons and definitely do the heads and cams , without question . Got mine for 1300$ on black Friday sale included gasket s cometic with rings gaped and bronze oil pump gear correct jets for my old Evo started on first revolution

[@GixxerFoo]

That's gonna be one bad sporty when you're done!

[@user-so2vs2bh2f]

When you buy a Harley Davidson you need to consider some things: Your riding style, your size, experience, etc. The Sportster is a good choice if you are a smaller statured person, mainly just do shorter distance rides, etc. Some of the bigger bore Sportys 1200 plus ccs if the motors are done up right, geared right can make good 1/8 mile strip bikes. However if you are a bigger person and you go on longer rides you may want to look into a Big Twin with a longer wheelbase. My first Harley was a 04' carbed 1200 Sporty and it was alot of fun, made good power, etc. However at around 5' 10" 190 pounds I was wanting something bigger like within a year or two. You get beat up more it seems out on the Interstate.

[@GixxerFoo]

Sportster is a great bike but it is definently a lot harder to run the interstates and go some distance on. It can definently be done and they will do it, no problem there. For sure some much better options out there with the bigger Harleys though.

[@yaboileeroy3038]

Big dude here (6-foot, 200lbs). Loved my mid mount pegs, made town riding and hitting curves way nicer. On a loaner V-Rod after the bike burned in a house fire, forward mount pegs are a bit of a struggle considering I have the bodily proportions of an orangutan. Legit gonna convert my next Sportster or first Dyna to mid mounts if they have forward mount pegs.

[@jamesderbaum9678]

I went with the 1275 kit, with XB heads ported with 190 intake valves, with the 560 cams, S&S Super-G with a thunder jet with a supertrapp 2 into 1 exhaust that I had to remove the baffles out of it because it wouldn't run with it. Fabricated some baffles for the exhaust. Total Beast. One thing you should know though running a S&S carburetor on the 1275 kit you have to cut off three fins on the intake side of the cylinder so you can bolt up to a S&S intake to the heads. They failed to tell you. They claimed they manufacture this with the intention of Mikuni the Mikuni will bolt right up. But I'm running a Super G with a 93 main jet and a 110 thunderjet. Dyna s ignition. Super fast very easy starting also. I recommend going with the carbon fiber clutches with the energy one 15% clutch spring

[@GixxerFoo]

You went with the full on setup, did you go with 10.5:1 compression using the 560 cans or did you go higher? I am really surprised with the S&S carb you had to modify the fine like that. What year is your bike?

[@kannabisgod]

mikuni all the way bro u tripppinnnnnn

[@jamesderbaum9678]

@@kannabisgod , I heard they're good carbs, I've just ran these the pass 20 plus years. The super G pulls like mad, then adding the thunder jet, feels like a small shot of NOS.

[@Jack_Schitt]

I've learned so much watching your videos. I hope you keep making them.

[@GixxerFoo]

Thank you, I appreciate it! I plan to keep on going as long as everyone keeps up the support!

[@geraldwest3428]

Sportsters for life!

[@HolyBibleOpen]

Hammer has reached 132 hp on their 1275 kit. HPI throttle body and ported heads. Tuner and pipes. Trask makes a turbo kit as well. Combine them and who knows how much hp you will get. May build one to find out.

[@GixxerFoo]

I can't even imagine the numbers of with a turbo on one of their kits... Lol traction may be a small issue.

[@glenpope4955]

@@GixxerFoo might have to do a video on what options are for wide tires in the back

[@robertlumsden942]

i went with the harley kit and i liked it. it is plenty for me. i went from the 883 to 1200 and it was just super great. such a great increase in power. i have heard great things about hammer.

[@GixxerFoo]

The Harley 1200 kit is a lot value for the money, either converting from an 883 or freshening up a 1200. Those heads are the 07 and later heads, they are actually better than the highly sought after Buell heads. Good for up to 100 horse give or take a bit.

[@ibast1]

NRHS have closed. S&S state their 1250 kits don't work with stock 883 head. Their 1200 does.

[@GixxerFoo]

That's true, S&S doesn't have pistons like Hammer does for their 1250 kits. I hadn't heard about NRHS, how long have they out of business?

[@ibast1]

@@GixxerFoo not sure. It's on the front page of their website.

[@GixxerFoo]

Dang that's sad to hear, Aaron at Hammer came from there too.

[@keltingr2612]

just got HAMMER'D. Can't wait!

[@colinlevasseur1438]

I got hammered. 1250 in my '91 sporty. Stock heads, jetted carb.

[@GixxerFoo]

Those 1250's are fun to ride! Did you just do the jugs or add some cams too?

[@colinlevasseur1438]

@@GixxerFoo yeah. I got stock heads and cams. I got stock exhaust with turnouts. It was static timed, but got a dyna 2000 at a swap meet. Would like to have work done on a pair of donor heads. Try to keep all my original parts. Original jugs and pistons long gone. Broke a skirt and wiped out the inside. Soon get an air cleaner. This actually was my mom's bike 10yrs ago lol.

[@GixxerFoo]

That's awesome! I'd imagine it still runs pretty good with the 1250. With it mostly being stock it's gotta produce pretty damn good torque.

[@colinlevasseur1438]

@@GixxerFoo it does! Hope to get heads, air cleaner, and good pipes. Awhile back, heard an awful ping/rattle sound at 70. Couldn't figure it out until I accidentally bumped the lower pipe. Bolt fell out. Rattle gone. I run premium. I get about 60miles then need to look for fuel. 2 gal peanut

[@GixxerFoo]

Nice! I have a bike with the peanut too, get maybe 70 miles out of it. Your bike will run damn good with some pipes and air cleaner.

[@scottzweiback7170]

The hooligan kit comes with the large finned cylinders, I have a 94 xl and bought the the kit for 99-up it bolts right on but you need to buy different lifters, s&s doesn't make them for the older bikes I went with Comp cams lifters , I love it... Highly recommend changing compensator gear and clutch

[@pcofranc]

Great info. I'm skeptical of the numbers of the less expensive or any kit that claims over 75HP without cams / exhaust etc. Larger cooling fins kits are probably the best option and S&S is probably a safe bet for support. Also, what about the bottom end can it handle the power? Shouldn't the crank run-out be checked?

[@Dipndots87-ms6ds]

A fuel injected 1200 with breather, exhaust, and tune is capable of 80+ wheel. Not everyone is going to get to that number but many have. I am currently waiting for my 110+ 1275 package to arrive.

[@RedlineDR1200]

Great vid! But, geezus, some of the comments crack me up! Where do these guys get some of their info? FYI: nrhs is OUT OF BUSINESS!!!!!!!!!!!!!!!!!!!!!!!!!

[@GixxerFoo]

It was sad to see NRHS go, they had a decent price on their products and they worked.

[@ardzye5374]

Love my S&S kit on my 05. Best decision.

[@GixxerFoo]

It's amazing what a 1250 kit does for a Sportster with a set of cams!

[@thomasbarnardjr9657]

Great video...I love the content. I looked into the big bore kit for my sportster bobber build, but ended building my own engine out of a few different engines. My engine is a 1988 883cc low end, with a buell xb conversion. The pistons and heads are out of a xb9 engine and are roller rocked, with polished valves and bee hive springs. This particular conversion yields a 12:1 engine compression that's insane. The engine has the Andrew's v4 grind cams that are .0500 lift. It also has the Andrew's 4140 chromoly adjustable pushrods. The roller rockers are made from Jims. The lifters are the original hydraulic lifters for now. The engine has an accel 35496 ignition set up on single fire, and stealth super coils that I'm hoping to use. The bike is running a S&S super E shorty carb with a Kuryaken velociraptor breather as well. I'm looking at getting between 90-100 horsepower at the end of the day. At least that's what I'm hoping for. Like I said before, great content. Thanks again

[@GixxerFoo]

You're welcome and I appreciate you watching! You built one heck of a motor! So I have two questions, are riding that on the street and what kind of fuel are you gonna use?!

[@thomasbarnardjr9657]

I plan on riding on the streets, but any racing will be done at the dragstrip lol. I haven't really decided on the oil yet, but most likely I'll run Amsoil, and whatever my best friend recommends for the primary. I also need to do some adjustments to the gearing. This thing being a 4 speed is really gonna need some adjustments. It's gonna be a little torque monster

[@thomasbarnardjr9657]

Oh and as far as the fuel goes, I'm hoping to be able to run it on 93. I won't even consider running anything less

[@GixxerFoo]

I don't think you could with that compression ratio, it is stout!

[@thomasbarnardjr9657]

Yeah it is. I done it by mistake lol. When I bought the top end, I knew I wanted the XB heads by Buell, but I didn't know anything about the differences between the xb9 and the xb12. And I found a really good deal on the xb9 pistons, cylinders and heads. They were a match set which was perfect. I was aiming to get 10.5:1. What I didn't know is the xb9 was a short stroke engine that utilizes a shorter connecting rod, to rev higher. The pistons have a sizable pop up dome to make up for the loss of compression due to the short stroke connecting rods. After doing some research on the forums, and talking with people about it, I came to find out that quite a few people have done this mod with the xb9 pistons in a standard long stroke 1200 cc engine, and have achieved that 12:1 compression stroke. I may have to go to an even larger set of cams to get enough overlap in the valves to help with that. But I'm hoping that the current set up runs good as it is. There's been a few who've had really good luck with no major issues.

[@aswracing1]

Just an FYI, the S&S 1250 kit is not available with conversion pistons for use with stock 883 heads. To go 1250 with S&S, you have to buy new 1200 heads.

[@GixxerFoo]

That's a really good point, I swear you guys know more about the Evo Sportster than the people they have working at Harley-Davidson. Your work on the Sportster is incredible and really opened up so many possibilities with those motors. I highly recommend all my viewers check out Hammer when asked about Sportster performance.

[@thakery5720]

Hammer are the only way to go - they are the leaders in Sportster performance. Both Aaron and Dan are record holding racers that turned their hands to production after a lifetime of experience..... and no, I do not work for or have any association with them other than as a customer - I am in England not the States ! It is a better idea to buy (start with) a 1200 rather than an 883, they are twice the bike from the get-go and if you want to go 1250 or 1275 then the heads are easier to port. 883 heads require a substantial investment to be able to support decent performance gains - 1200 heads less so. It is not worth changing cams and going to 1250 or 1275 - even from a 1200 - unless you get the heads ported. 883 heads are terrible because they are meant for a 3 inch bore cylinder and this means the valves are closer together which stops you putting in the larger valves to enable it to flow enough air. Even 1200 heads do not flow enough air to support 1200cc engines in standard form - look at the Moco's dyno graphs for the 1200. They stop increasing power output at around 4 - 4500rpm and that is where the fun starts. 88 or 90 inch kits require lots of money and make the engine a bit fragile as you will be tempted to use all that power and things will break. It becomes an exercise of diminishing returns - the more you spend the less the relative power gains you get. If you want more power at low revs and never rev it over 4 - 4500rpm then buy a new M8 Softail, but I warn you now :- YOU WILL SOON GET BORED WITH THE POWER LEVELS !!! But then you can invest in doing the engine mods to your Big Twin and the fun really starts ! Where engine mods are concerned, if you have to ask 'What are the prices ?' then you cannot afford it. Power is just as addictive as any drug as it increases your adrenaline levels and that gives you greatest 'high' of all - you cannot get busted for it AND you still have the bike the day after using it !!!!! I have both an '06 XL1200R (now 1250) with about 100 bhp and a 2010 Dyna Streetbob (now 113") with over 130 bhp. The Dyna is the better bike for long journeys as it is faster AND more comfortable whereas the Sporty is so much fun I cannot bring myself to part with it !

[@GixxerFoo]

Dang sounds like you've done homework! Hammer is an awesome company and they beat the competitors in power and price. I just wish l knew what those guys forgot about Sportster engines.

[@thakery5720]

@@GixxerFoo I doubt they have forgotten anything ! The nicest thing about Hammer is they will always try to show you the most economical way to do things. They always recommend what they have found to be the best way to go and they never give you the hard sales talk. Genuine people like that are hard to find these days.

[@RayfordRaySiegel]

It sucks that the 1450 kit, from what you stated, will make the engine fragile. I was considering getting one, if I could ever afford it, for my 2003 Sportster. I would like to make my Sportster able to handle the weight of metal hardbags a and an FXR Fairing, and I'd like to be able to ride it long distances, with ease. Also, I had heard that 883s were better to start with, because of the cams, but I don't know. Yeah, Aaron and Dan seem like pretty cool guys. Aaron was helpful, in his replies, when I was asking questions. He also told me that it's better to do the work on their kits, by yourself, because they screw it up, at the shops. They even have instructions, which is great for me.

[@clintwoodruff1187]

Well, Thakery, that lets me out! I've ALWAYS had to ask prices. Guess I can never have anything except stock.... OH, WAIT a minute! That's just BS !! Now let me see, I've had 2 stroker Sportsters, ( 63" and 77")with head work, stainless valves strong springs, S&S carb, reinforced trans case, heavy duty forged door, hot rod clutches by barnett, performance cams, heavy duty rear motor mounts, high flow gas petcocks, and 1/2" ID fuel line, forged pistons, S&S Supreme rods, and on top of that a 93" hot street Shovelhead, with forged pistons, Supreme rods, heavy duty cylinders, and STD heavy cases, World class ported heads with stainless valves and heavy springs, porting by Bonneville record holder Tom Whiteman, S&S carb , Rivera Engin eering Primo clutch, and that one gave me ALL I EVER WANTED and A little bit MORE !! So you know what? Better not to spread that bull ***t, because you just discourage people unnecessarily with your cocky line of crap! Don't listen to this BS people... follow your dreams! You'll get there! Just keep your eye on your goals, and never give up !! You CAN be poor, and still achieve your dream of having a great Street Rod ! If I listened to people like him, I never would have had anything! As it turned out, I had the best years of my entire life riding the hell out of my Streetrod Harleys!!! I had holes in the knees of my jeans before it was ' A Thing', but I saved up and got my cams, then valves and springs, etc. ! You can have it all, just NEVER quit !! And never listen to the 'crap ' you hear from cocky people who have more money than you! Just ' keep on steppin' ! You WILL get there !

[@thakery5720]

@@clintwoodruff1187 Sounds like you are talking about Ironhead Sportys along with the Shovel.... well I have no experience of owning either - friends have and spent too much time and money rebuilding them after trying to stay with more modern bikes..... I had the same situation with Brit bikes - I could make them 'run with the crowd' but was always having to work on them as the older stuff cannot cut it with todays traffic and demands.I wanted a more modern bike but just couldn't afford it - until I realised that the constant attention and parts purchases added up to more hassle than buying a newer, more reliable bike.... but each to their own ! I did 'swap bikes' on a ride out with a friend once, he on a 1983 Ironhead and me on a (lowly) 1990 883 Evo four speed Sporty.... hadn't gone more than a mile when I stopped and got my bike back. The Ironhead felt like something from the 1930's..... and it was so mechanically noisey that I just didn't wanna know.... Did you notice that at no point there was I ever personally offensive about your comment ? That trap-door tranny was quite a problem - it was a legacy from the old (35bhp) K models from the early 1950'sand Harley dropped it when they went to the rubbermount bikes, probably due to cheaper (and easier) production along with being stronger overall. It seems like a better idea, as I remember my fourspeed was often in need of tranny work after I increased the power to about 85bhp, yet my '06 XL1200R with the Hammer parts (producing a reliable 100bhp ! ) has just turned 70k miles without a single issue so..... And still no expletives or insults, we must be different kinds of people ! Are you reading this Gixxer.... I must admit that I ain't viewed you channel for ages - how's thing going mate ?

[@ghosteagleguardian]

glad I am part of your channel

[@GixxerFoo]

I do appreciate it and the channel has grown quite a bit!

[@ghosteagleguardian]

@@GixxerFoo I have seen that, I am trying to get mine going, but have failed at the editing part lol

[@GixxerFoo]

Look at Filmora, l switched to that a while back and it is wonderful. It's straight forward and very user friendly.

[@ghosteagleguardian]

@@GixxerFoo will try it bro

[@nbowling10trio]

I've done two hammer kits and they really wake the small evo up. I was pleasantly surprised

[@missyfochtman4203]

The fueling 505 work great on a 883 with stock valves an springs you can go alot bigger when you get away from the 883 hemi style heads.

[@GixxerFoo]

Does it make the valve train super noisey like the screamin eagle cams?

[@missyfochtman4203]

@@GixxerFoo no i mean they are real choppy lopy sounding but i have the 585 reaper cams by fueling an no valve train noise.

[@davidfarnell512]

Just went on the NRHS website. They are closed down. Dang! I liked the price.

[@GixxerFoo]

That's what l heard is that they shut down! Hammer is still going strong, a bit more but very high quality.

[@JIMBOBALOU]

Zipper's performance does 88" big bore kits for Sportsters. But you would need to bore engine cases as well. They offer 1200 performance kits also

[@GixxerFoo]

The 88ci and 90ci Sportster kits are interesting, Hammer has had some customer's bikes with those on the dyno. Surprisingly the numbers were pretty close to a comparably built 1250.

[@JIMBOBALOU]

@@GixxerFoo huh, I haven't looked into them very much. Because I don't see the point in boring out your Sportster case to go bigger. Just buy a used Dyna. Haha

[@billwilliamson9842]

yea those are slick but only for the older rigid mounted frames.

[@stinde666]

My local mechanic bored my 883cylinders and fixed the topend also with bigger valves and a better flow! It’s a 06 custom and man the difference it just flies 💪🏻🤘🏻

[@GixxerFoo]

It's amazing what a huge difference a little bore increase can do! The guys at Hammer experimented with just boring out to 1275 but the cylinder spigots were too thin at that point.

[@stinde666]

GixxerFoo yes I think the 06 was the last year with the thick cylinder walls !

[@GixxerFoo]

Last year of the carb, man those sound so good at idle!

[@stinde666]

GixxerFoo yes I’m a dinosaur love the carb 😂 getting guys upset when I trash talk the injected bikes (all with humour)😂😂

[@GixxerFoo]

😆😂 love it! They both have their ups and downs, it's really a matter of preference. I like both personally, especially the sound of the carberated bikes. The power numbers are only marginally higher with injection since the cylinders can be tuned individually.

[@rugershooter5268]

Revisit Been watching hammer drag race videos, got thinking......oh no If I could find me a cheap needing repair 883, I could do this, maybe the wide tire and extended forks too I'm waiting for response from Harley dealer down south.....1000 mile round trip and cost less than buying one around here(maybe depends on its condition) Checking hammer site, they also make 90ci, cutting required

[@GixxerFoo]

The 883's go dirt cheap, get you a 1275 kit and get the head work done cause 883 heads leave a lot to be desired. New clutch and a jet kit with an upgraded ignition and you'll be good to go!

[@PITBOY911]

Great video, the Sporters are the most underrates HD bikes, but they are great and very agile and if you mod them, hahha is a giant slayer!

[@GixxerFoo]

They really are, they just got a bad reputation from the rigid mount days. Harley has improved them quite a bit, especially with the suspension in 2016.

[@PITBOY911]

@@GixxerFoo any of them prior 2016, need a suspension change, I did it in mine 2012 and I love it.

[@theblackarrow]

I have a 1200XLC. What a good rear suspension? Especially if you wanna 2-up once in a while. Thank you.

[@GixxerFoo]

@@theblackarrow I recommend checking out Progressive Suspension, they make some dang good products. They have products from entry level all the way up to piggy back reservoir shocks. They are also a lot cheaper than Harley's Screamin Eagle suspension.

[@PITBOY911]

@@GixxerFoo kzbin.info/www/bejne/m4rGgGmMgL10btk Watch my build using 430 Progressive shocks.

[@jeffsecrest8135]

I am currently putting a Hammer 1275 kit cams and heads done for my 96 S1

[@GixxerFoo]

That's going to be a fun bike with that kit installed on there!

[@user-st4gq2ox8m]

What about the pressed together lower end? With a big Bore how long before the wheels shift and I blow up the Crank ???....Just Askin? Since they do this with just STOCK...

[@ontheothersideoftheroad]

I always thought if I want to go bigger later why not just by a Sportster that has the biggest engine e.g. 1200cc. To me its not worth the money. Now as far as touring bikes go, the newest bikes comes 114" -117"cu. whereas you can go with a crate 131cu. that is a big difference.

[@GixxerFoo]

That 131 produces some serious power and it can still be emissions legal.

[@hugieflhr03]

Revolution performance was a Buell performance company as many of us have used their parts.

[@GixxerFoo]

Harley could really use Buell right now since they've decided to try and branch out again.

[@rugershooter5268]

It's been near 10yrs ago I saw a kit to make either a 1440, case cutting required...... My brother bought 1200 kit at Harley store, had it put on at Harley store, then started going thru stators...... everyone that knows says it couldn't have anything to do with changing '89 883 to 1200......but I think the compensator for the 883 was not good enough for 1200, first time giving it gas (and you will give it gas, otherwise you'd be happy with 883) the stator gets its teeth jarred and there goes a magnet. I'm on the side of thinking if Harley thought there should be 50 more CC's they'd put'em in there Another brother got that bike in 2013, had lots of work done(because it sit for nearly 20yrs) and of course 1200 kit had nothing to do with it and he had new 1200 jugs and pistons, after 1 week the battery is dead, so it's been sitting again, so now he's going to have the compensator looked at

[@GixxerFoo]

That's really interesting, honestly it shouldn't have anything to do with it mechanically speaking. But I've seen a lot things over the years that shouldn't of happened but they did just like the stator. Have you tried later model stators or anything? I haven't ever had that issue and I haven't heard of it enough to narrow it down to certain model years.

[@rugershooter5268]

@@GixxerFoo it was immediate after 1200 kit, it was 883 89-92 with no problem.......it's not my bike, but it is willed to me, if it's not fixed when I get it I will change it back to 883........ I also get his '13 1200 and any Harley he has at death(I'm trying to get him on a Slim) so I won't be missing the power(I've got WG 96ci and 2 Suzuki 90ci)

[@GixxerFoo]

I'd be curious to try a stator from a different model year and see what happens.

[@scottzweiback7170]

1250 hooligan is the way to go. Bigger fins fit on 03 and later. But lifters don't. I went with compcam lifters

[@donstewart368]

The Hammer guys are the best.

[@GixxerFoo]

Aaron is awesome, I just wish I knew what Aaron and Dan have forgotten about Sportster motors. It's rare to a company as straight forward and truly interested in the success of your build.

[@billwilliamson9842]

I don't see the performance increase all things bein equal between a 1200 and 1250 or 1275 kit, but if i had a 883 bike, that 1275 is the way to go. I wish the 90" and 100" kits didn't require a rigid sporty frame as i'd love to do a 100"r on my xr1200.

[@evamccray6500]

So here it is 4 years later. How about some feedback on these built engines? Performance, dependability,. massive problems? Bad idea, good idea, are they road worthy or bar hopper streetlight to streetlight machines only?

[@GixxerFoo]

They are actually very very reliable, you won't have an issue one with a Sportster that has a big bore kit on them.

[@evamccray6500]

@@GixxerFoo Thanks for replying. My grandson has a 883, and has been thinking about building it up. I have been curious as to if this was a wise choice. You can read, watch and listen but until you're around some people that have actually done this a person is in the dark. Thanks for your time and view point.

[@martwatt8265]

Thinking about doing this conversation. Can't find the vedio to watch on why convert my stock 883 to a upgrade ( 1200/1250/1275 big bore kits) can you please help me with this

[@paulaxton72]

Zipper's performance also does big bore kits but they are the most expensive I'm suprised you didn't mention the 88ci conversion kits not quite bolt on since the case would need machining or maybe they weren't out out when you made this but Hammer's even offers a 90ci aswell.

[@paulaxton72]

*typo 90ci

[@GixxerFoo]

Really surprising though is that the 1275 makes just as much power. I think a company called Axtel makes the cylinders, they run very hot is what l've been told. Mainly better suited for drag racing than the street, make a run and shut it off lol.

[@paulaxton72]

@@GixxerFoo I think we are already asking alot of an antique engine design, sir HD could have made a modern engine that runs cooler and more efficiently but that take a away from the nostalgia . When I watch a video comparing Victory engines to Harley I laughed my ass off , it's like comparing apples to oranges it's not an antique engine design it's comparing a model T to a modern Camaro. My point is these are going to run hot no matter what I think an 88 might run more efficiently those numbers produced in the 1275 kit were made after ported, polished heads and performance cams were added if you did the same thing on the 88ci it would crush the 1275cc kit, at that point you would be pushing the integrity of the case . Because it would be producing around 130HP and around the same in torque.

[@lxldsmxfreaklxl]

You should look into the zipper performance website.they have a big bore kit on there that's crazy, More horsepower than the hammer kit

[@GixxerFoo]

Zippers takes a different approach in which they keep the same bore but they add very high compression, monster cams and fueling. It's a different route to the same point.

[@RedlineDR1200]

apples to apples home slice. not apples to oranges!!!!

[@lxldsmxfreaklxl]

@@RedlineDR1200 well what about lettuce to cauliflower?? Just throw in an extra 45 shot of nitrous and call it a day 🤭

[@aliarici8289]

Hello friends! I have an Evolution 883 xl / 2 from 1997! I want to upgrade the engine in my garage! which of the kits can be installed with little effort!

[@GixxerFoo]

I would highly recommend the Hammer Performance kit, they have the most detailed instruction right down to the tools you need. I would highly recommend a Harley Factory Service manual as well, the one you get from the dealer. It's the most comprehensive step by step manual you can buy!

[@gunner9010]

Maybe I will buy a Sportster. I like to tinker and customizing would be fun. Skulls..black..more skulls.

[@GixxerFoo]

Sportster is an excellent bike to do just that with, you pick up older Sportsters really cheap!

[@timothyewer7306]

My man Ihave a stock 1200 2001 want to go big bore 1275 what cams do you recommend

[@GixxerFoo]

Hammer makes some great cams with their 570 if you're keeping stock compression, I also really like the Feuling Sportster cams.

[@timferguson9005]

revolution are probably the best cylinders I think they have nickle in the linings and well worth the money

[@GixxerFoo]

They are a very slick looking product, they make kits for bikes no one else does like the Scout and Street.

[@RayfordRaySiegel]

What does the nickel do for it, and is it in the cylinder, where it was bored?

[@GixxerFoo]

It's in the cylinder bore, it's a nickel/silicon carbide and it produces a wear resistant surface for the piston.

[@RayfordRaySiegel]

@@GixxerFoo, Thanks. I wonder how Hammer Performance's lining compares, and what difference it makes to have it or not.

[@steverick3060]

I have the 1250 kit with the 505/515 and did the velocity package done by revolution performance was told the nickel silicon helps keep the motor cooler or dissipate the heat faster

[@dominiheightz]

I’m thinking about doing something to my sportster 48 ,would the 1250 or the 1275 be worth it ?

[@matrox]

What about Zipper's?

[@GixxerFoo]

Zippers makes some nice kits, but if you're interested in the Sportster I would hard pressed to pass up Hammer.

[@jasonsampson9408]

I wonder if 04 or newer cylinders would fit a older evo sportster

[@bryanwagner2330]

If I do a standard 1250 conversion with 883 heads on my 2014 do I need a flash tuner?

[@GixxerFoo]

Yes, you'll want the power vision which will make you're life a lot easier getting the tune file. With the bore increase there has to be fuel and timing changes or else the motor will seize up.

[@bryanwagner2330]

Thanks for the help!

[@kegankirby1460]

You didn’t mention the 90 ci that hammer offers

[@clubstyleridahd4695]

Does hammer have power vision tunes they can send you? If you purchase the 570 cam? Or will a tune from fuel moto do?

[@GixxerFoo]

They do, they will email you a tune file that's setup for the cam you're installing. You can ride it like that but at the very least you'll want to do some good auto tune sessions to get the map dialed in closer to you bike. Best way of course is to get it dialed in on a Dyno though, but a good auto tune session works well too.

[@clubstyleridahd4695]

Awesome thanks man! Would you rather have a stage 2, 570 cam set up. or a 1275 with stock heads and W cam? ( 07-13yr). I'm looking for the most bang for my buck.

[@Onlyone10184]

What’s your opinion on the vtwin manufacturing big bore kits ?

[@GixxerFoo]

They are less expensive and made over seas, they are lower cost option but you're really only a couple hundred dollars off getting something from Hammer or S&S. I haven't seen any glaring failures with them, if you can't swing the extra money they are good option but if you've got the extra I would go with a more main stream brand.

[@BFG100K]

Please inform what tuner you used to remap the ECM and if you did auto tuning, how did that go?

[@GixxerFoo]

I used the FP3 on my bike and my wife's bike. Her map on her bike was spot on and runs great! I did autotune mine, and it runs awful during the session as expected lol. But done thorough it really dials in the map to your bike, get all squares green you can 👍. My dad rides a Vrod and we used a PV for his bike, a bit more difficult to work with but huge improvement, no auto tune yet.

[@leesire]

S and S sells a 1360 kit per my mechanic

[@GixxerFoo]

Nice! I remember they had 100 inch Sporty motor at one time, it was pretty pricey though.

[@infini1970]

Such excellent info here. Thank you.

[@missyfochtman4203]

Hammer!!!!!!

[@GixxerFoo]

I agree, can't beat there kits and service!

[@danield831]

Wondering if someone can help me out here. I am on a quest to smooth out the power-curve on my tune, but not sure how. I recently had a stage 1 done on my 2008 Sportster XL1200 R: Arlen Ness -stage 1, big sucker air cleaner kit and Bassani Road Rage 2 into 1 exhaust. A local shop whom I trust and have been business since the 90's did the install as well as the dynotune. Baseline was 56.1 HP @ 6,072 RPM and 61.2 ft.lb (torque)@ 2,684 RPM. After the stage 1 the numbers were: 63.1HP @ 6,010 RPM and 65.76 ft.lbs @ 3,294 RPM. So there was a definite and noticeable increase in power BUT it feels completely jerky, and twitchy to me when I get on the throttle and go through the gears. Especially at low to mid range. Mechanic said that HD's stock throttle spring is too soft and that may be what is causing the twichiness. BUT what I am really looking for and what I REALLY want is a good, strong, torquey, pull throughout the powercurve. Make the curve more linear and smooth out the jerkiness if that makes sense. Is it realistic? How can I get it? How would adding a cam and big bore kit effect the power-curve? Maybe it's a tuning issue. I dunno, I'm probably asking too many questions...lol.. but maybe somebody can distill it down and help me find the answer. Lost, confused, and hoping for answers here in Washington state. Thanks

[@GixxerFoo]

What tuner did they use on your bike? My bike stock with the very lean factory tune ran about like you're describing. Maybe they tuned that bike very lean?

[@danield831]

@@GixxerFoo So here is the confusing part, all the tuning shops in town say that it cannot be tuned without a powertuner of some sort. But my mechanic insists that he was able to unlock the ECU without one, AND he tuned the bike on the Rich side. I even had a different shop take it for a test ride and they confirmed that it's not running lean but he was baffled and very interested in how my mechanic was able to access the ECU without a tuner. So that's why I'm confused. In any case just looking to smooth it out. Thanks for responding and your great videos!!

[@GixxerFoo]

No problem and thank you for supporting the channel. The only way l am aware of to do something like that is at a dealer through Harleys Digital Technician. That's what they use to update the ECU and use those "download tunes", which aren't that awesome. I would get a tuner (PV or FP3) or get it on a dyno and let a pro tuner dial it in.

[@danield831]

@@GixxerFoo OK thank. I'll look into it. But in general what does a cam alone or cam, big bore kit do to the powercurve? I mean how does it effect the power? I am looking for a more strong, smooth, linear pull across the curve. Make sense?

[@GixxerFoo]

Everything depends on the cam, but a big bore kit even with stock cams produces more power at every throttle position per rpm. Now some cams will get a drop in power down low, then put a huge burst on top. Other cams provide an increase over the entire curve over stock. m.kzbin.info/www/bejne/e5bJgJh7rNCkmJY l can the a novel out here but this has all the charts to show over stock. This one will cover the what cams can do for you m.kzbin.info/www/bejne/h5q6ZYOfgLd1rpo.

[@kongebilj193]

I got a 2014 883 Low. And im thinking of this 1275 kit. What more do i need done with the bike? Flashtune, exhaust, stronger clutch and so on?

[@finestoffreedom3170]

Do it or save your money for a dyna

[@mrutherford8590]

Can the 883 crank and transmission handle 90 hp?

[@beaumontclark69]

So a hammer 1275 would work with a stock 1200?

[@THEREALBONZO]

I know it's an old video and that Nrhs closed, but a random thought popped into my head. I wonder how much lighter the small finned Nrhs cylinders and head offered over the factory big finned 1200 package? Now back to our regular viewing

[@simonkennedy6116]

Those stock 883 numbers are unbelievable. There are scooters that can out perform that

[@GixxerFoo]

No kidding, the 883 numbers are pretty dismal to say the least.

[@georgecostanza2695]

The numbers for any Harley relative to engine size is pretty dismal, but they don't sell bikes based on spec sheet figures. They're selling a feeling that can't be dyno'd. Case in point: the Iron 883 is one of their best selling bikes... because the feeling it offers is more than the sum of its parts.

[@An_Enraged_Pig]

The numbers are bad but if you take a talented rider, they could out ride most cruisers that aren't balls to the walls decked out.

[@GixxerFoo]

Rider is is 90% of it, at track days guys on 300's will ride circles around 600's and litre bikes.

[@erneumann3136]

I enjoy your videos.

[@GixxerFoo]

Thank you, I appreciate the support!

[@robbyclark6915]

You really should be running a good stage 1 already though before upgrading to more displacement…..right??

[@GixxerFoo]

To get the most out of it as far as horsepower and torque you'd want to have the stage 1 setup done. You could run it with the stock exhaust and air cleaner, just tune for it but it would really cripple the kits power.

[@STEP_BACK_3]

I was satisfied with the S & S. I could never ride a sportster again without that extra power

[@jeffreystorer4966]

Maybe I'm getting old ,have a 07 ç model ,883 se race tuner vh short shots,and kukurin a cleaner,it's tuned sweet , handles pretty good , happy as a pig in shit , LoL

[@ihateemael]

this is only a 2 cylinder engine not a v8! How much does it cost for two oversize pistons and get a machine shop to bore out my cylinders?

[@GixxerFoo]

My thought is motorcycle have half as many parts so they cost twice as much lol. You could probably get away with boring out to a 1250 and using larger pistons, but the piston kit is going to run about 300 bucks, then the cost of the machine shop. The problem with boring is that you reduce the size and strength of the cylinder spigot, this risks cracking it or worse it comes apart and falls down in the motor. The kits are cast to bore size, the spigots are actually reinforced with high tensile strength steel to perform with out coming apart. The cylinders in these kits are actually stronger than the factory cylinders. There's more to it than just boring it out, especially with the 1275 that fits on the stock sportster cases.

[@stevejames9510]

If you ask "How Much" you are not in the game.

[@GixxerFoo]

Lol you probably don't want to know the answer.

[@stevejames9510]

@@GixxerFoo Same deal in the Gun game, I learned to save and just say Ill take it. Pay once cry once.

[@GixxerFoo]

😆😂 l just try to not think about it

[@rabidpandamotovlogs1389]

Zippers 88" for Sportsters.

[@cgscprspecialist3937]

I think the hammer 🔨 kit would be awesome

[@marvelharris9540]

I was ready to pull the trigger on a 1275 kit for my 01 1200 sporty... but Hammer tells me the stock 1200 heads are the worst heads ever made blah blah, and I would not see much power gain unless I spend thousands more on new heads.... f that

[@GixxerFoo]

They are pretty straight forward shop, l am surprised that year of head wasn't good. They do know those motors inside and out though.

[@joetroutt7425]

I'm not sure what is so bad about them. I have an '03 1200 custom And I have revved that thing wide open till flames was shooting out the pipes and it still runs to this day (wishing it would blow up to give me an excuse to rebuild it) and that was two years ago. I mean those Evo motors are bulletproof.

[@GixxerFoo]

They are bullet proof, l love those motors! If l was a fabricator l would put one in a Sportster Evo in a Dyna or something crazy.

[@Hagrid15SYLO]

millennium makes one you can bore even bigger no sleeve

[@karpotrias]

S&S 1200 to 1250 kit can't fit with 883 heads.

[@GixxerFoo]

S&S's won't but Hammer's has one that will fitted with reverse dome pistons for the 883 head.

[@ghosteagleguardian]

subscibe? why would I do that? Oh I know, I love your style and your cool lol

[@GixxerFoo]

😆😂👍 l appreciate the support

[@ghosteagleguardian]

@@GixxerFoo I love giving you a bad time bro

[@GixxerFoo]

😆😂 l would be concerned if you didn't

[@dantheokiesooner7048]

1275+buell head swap

[@wittowat9131]

These kits are over 900 dollars now lol

[@GixxerFoo]

They've gone up exponentially since the video was made, it's gotten crazy!

[@darthmittens5863]

Horse power is just a wank number

[@GixxerFoo]

It really is considering when all that power is waaaay up on top at 7k rpm.

[@ericgrueser7532]

I think it's funny that he only compares the 1175 hammer kit too the Hooligan kit of s&s which ofcourse has less HP cause its ment too comply with the EPA!! But what he doesn't tell you is that The S&S 1250 High compression kit is nearly 100 hp with a 1200 and ported heads!! Then he goes on too say that the 80 hp kit is better cause if you add ported heads cam intake and exaust you can get nearly 100 hp and that's cheaper then going with the s&s kit!! Hilarious!! This dude definitely works for Hammer when even in the video it clearly stated in the chart that the High Compression 1250 s&s kit had more HP and for a little under 1k!!

[@GixxerFoo]

Lol I do not work for Hammer, but with the 1275 you have the advantage of keeping the compression down and not having to worry about pinging. High compression with head work and a 1200 will make power but you risk pinging.