S&S Big Bore Kits and Cylinder Heads for Harley Review at RevZilla.com

[@FlaskBlack]

I'd love to see an install video for these.

[@Doucettedon]

NOPE. Increasing the bore WILL require machining the engine case so that the cylinder skirt will slide into the case.

[@sgtsmokestack5944]

Don Doucette not always. depend on the kit. with the 96" harley the s&s 106" bolts right up. a believe anything after that tho you do have to drill cases.

[@obfuscated3090]

I suggest you read and compare kit instruction sheets which you can download from the S&S website. There's zero need for speculation. Installation isn't a secret.

[@t.s.racing]

@@Doucettedon wrong, S&S has one of my favorite kits that I use regularly and it allows for a 4.000" bore with NO CASE MACHINING AND NO REBALANCING, it's a true bolt in. 100" is the result, stock 4.000" stroke to convert the 88" twin cam. The kit is available for the stock 96/103 to make these 110 inches, again with NO MACHINING. Piston compression heights are changed to compensate for the longer stroke. 95-97-98-100 inch twin cam 88 kits are all available with NO MACHINING, SARGE

[@Skuurj2010]

Thinking about dropping the cash for the 106" kit for my newly purchased 96ci street glide. A little nervous about doing the work, but I think I can manage it. An install video would be amazing! This video did kind of push me towards biting the bullet on these, great job as always!

[@goodboyringo9716]

Fixing the Harley twin cam can make you rich. Building up the twin cam engine will slip the pressed together junky crank then you'll have run out destroying the engine. The only fix for the TC is starting with a new (my opinion ) S&S crank . Changing the cam chain plate & tensioners to hydraulic is good but not the biggest problem, the crank is! The stock Harley compensator before 2014 can't handle big hp. Harley junk!

[@Coyote-wm5op]

Think I’ll go with the unfinished jugs and heads. The black starts to fade and flake off.

[@earldetwiler5662]

WE went with S&S for all the right reasons.

[@Stelf101]

Who's WE?

[@aamirshaikh5585]

Kindly post a video on SS big bore 750/865 for Royal Enfield 650

[@BracaPhoto]

This PLEASE

[@jboy000]

Agreed

[@floridalawncareexpertsllc2817]

I saw something that said you can't use anything but an ss carb after installation of this kit.. that the intake manifold won't line up. I have a mikuni.

[@johnwlwconstruction691]

Just bought a S&S Big Bore Kit 585 cams jugs pushrods Pistons do I need to change the heads

[@thakery5720]

Increasing the capacity is a good way to get more power, but the heads are set up for the cams. Choose some cams (- the bigger the better in my opinion) that work well with the capacity increase you are thinking of ( bigger IS better ! )and get the heads ported by someone like Hammer who have loads of experience and can do it on a CNC mill - S&S can do it for you as well. Best Heads Harley make are the 110" twin cam ones and even they need work as they are set up to work with emission-compliant cams. As for the twincam crank, S&S ones are good and Dark Horse are the best but expensive - just get the crank refurbished with new rollers and cages, trued, pro-plugged and welded. Fit better mains ( the famous 'Lefty bearing') in both cases and get the case mouth bored for bigger cylinder spigots. 113" + engines give over 125 BHP and similar torque - I have done this and it is great fun, but the more air your 'pump' moves the more fuel it uses as well !

[@Itsme-mx5tl]

T-Man performance has the best M8 cylinders heads, they install a longer cylinders sleeve so the piston doesn't rock at the bottom of the stroke

[@JCcanU]

Built a 1990 883 for my wife 2002 , turned it into a 1200 gained 20 hp , it ran 85 mph before after it ran 120 mph , had more torque low end . she run it 4 years keep up with the Evo 80 ci 1340s and 88 ci 1450s , yes some women can ride . she got hurt on the job had to stop riding . :(

[@THEBIGCHULETA]

can we get step by step tutorials on how to do this?

[@RevZilla]

+THEBIGCHULETA Installing a big bore kit is a bit too advanced and niche for us to make a tutorial video on it, so we recommend seeking the help of a qualified local mechanic to either help you or do the work for you. -DrewZilla

[@walkaboutbase9961]

i just installed this in my 2015 SG. its very easy to install. save yourself $800 and diy

[@snipedetects]

@@walkaboutbase9961 did you have to remove the motor? Or shift it over?

[@cgandy2]

Not for the faint of heart yet there is a video by J&P Cycles on install: kzbin.info/www/bejne/a4jOoGihrsqjh68

[@bobswanson3546]

Can i install one of these kits on an 08 1200 with around 10k miles?

[@ihateemael]

how about shipping the rings preinstalled on the pistons and gapped to suit the bore? . . . so I don't prebreak them!

[@jeffreywhitmoyer9563]

do I need to do anything with my computer?

[@giovannipinto3416]

Why do they build cylinders with smaller fins than 2004 up stock cyls. Can a 100+ HP engine dissipate enough heat?

[@ricbo1959]

I have a 2016 FatBoy , What is the the largest HP and Torque upgrades I can do and still be a reliable everyday rider .

[@RevZilla]

For reliability, keep the stock compression ratio/stock heads and upgrade the oiling. So I recommend a big bore kit, oil pump, and cam support plate kit. -DrewZilla *www.revzilla.com/motorcycle/ss-106-big-bore-kit-for-harley-big-twin-2007-2017 *www.revzilla.com/motorcycle/ss-tc3-oil-pump-cam-support-plate-kit-for-harley-2006-2017

[@ricbo1959]

@@RevZilla Thanks , much appreciated .

[@RevZilla]

You're welcome! Glad to help. -DrewZilla

[@acearboriculture6408]

I have a S&S 124ci upgrade on my 2019 street bob with forged pistons, pushrods, performance high lift cams, high lift valve springs, tappets. 64mm throttle body, SE heavy fuel injectors, plugs, leads heavy flow breather and bassani big radius pipes. It has stock heads on it and was wondering if i should go for some S&S ported heads and if so what would you suggest ? It’s just come off dyno with 140Lbs at the rear ... but just wondering if the heads will make much more of a difference .. thanks in advance 🇬🇧

[@henrydhamster1093]

Yes, the S&S heads will make a significant difference. I would contact S&S and tell them what you have, what your trying to achieve and get their suggestion as to what head you want.

[@rlthejuiceman69420]

can you use stock rocker arms with the heads?

[@charlesflowers5622]

Richard Lazzar yes I already asked S&S because I had the same question.

[@eminor7536]

I realize this is an older video, but I was wondering if anyone had any experience building a twin cam 88 to 103. I recently saw a video explaining that screamin eagle used an 88 block with a 4.4 something crank that made the 88 into a 103 stroker I’m wondering how would this work with a 98 big bore kit. Any help would be greatly appreciated

[@robertglasser645]

I have a 16 street glide. I would like to do the big bore kit, I am trying to decide wether to use s and s or screaming eagle. Screaming eagle kit is around 1,700. Anyone out there give e there opinion?

[@GPgman]

I am looking at the 97 ci kit for an 88. What compression are the Pistons and what thickness is the head gasket. I would like to know this so I can tell the machine shop doing my heads .

[@RevZilla]

Give our Harley Geeks a call (or better yet, an email) for that. As a BMW rider, I can offer nothing but smugness. -Kraus-e *www.revzilla.com/contact-us

[@bill-fc6hz]

If you put a s&s 1250 kit on an 883 , how much hp did you go to ?

[@DARKHOLDCANCER]

hello I have an 883 2015 and my dilemma is that I do not know if I buy the simple kit or the hooligan kit and it is to know if it makes more noises than the HD model engine or it is the opposite I'm interested in more power and a bit of extra cruise speed for the road if the engine is forced. I hope you can help me with these doubts and finally decide your videos help a lot excellent channel regards

[@RevZilla]

Deciding which kit to get really depends on your budget and how much tuning you want to do/pay for. The standard 883 to 1200 conversion kit will give you a big increase in power without much effort. The Hooligan kit is more expensive to buy and more expensive to install, since you're changing the cams too. As for noise, the conversions are louder than the stock 883 and on par with a stock 1200. If you have an aftermarket exhaust, it will be louder still. For most people, the standard conversion and a fuel tuner is the way to go. -DrewZilla *www.revzilla.com/motorcycle/ss-883-to-1200-conversion-kit-for-harley-sportster-1986-2017 *www.revzilla.com/motorcycle/vance-hines-fuelpak-fp3-autotuner-for-harley-2011-2019

[@br2dive]

Obviously air intake is going to change, what about carburetor changes, will re-jetting do it?

[@RevZilla]

Re-jetting should be fine. -DrewZilla

[@nietolkj]

In your opinion between an S&S & a Screamin Eagle which one would be better in price and performance

[@RevZilla]

Harley does the due diligence to offer items that are EPA compliant if that matters to you. Otherwise, they're fairly similar. -DrewZilla

[@robertglasser645]

If I saw the correct kit, Screaming eagle kit was 1,700 to 1,900. How does the s and s kit compare?

[@ashtarango4696]

What size s&s heads do you recommend with the 100" bore kit if I DNT want to use stock heads??

[@Jiizzzninja]

I second this trying to figure this out

[@dennisou812]

I have a Dyna wide glide 2000 what's the biggest big bore kit I can put on ?

[@RevZilla]

The biggest is the new 100" Big Bore Kit for 99-06 Twin Cams. -DrewZilla *www.revzilla.com/motorcycle/ss-100-big-bore-kit-for-harley-twin-cam-1999-2006

[@s.v.gadder1443]

This is in frame i did it this week

[@robmagill5123]

What is the best kit for my 2016 street glide without boring cases?

[@RevZilla]

That would be the 106 Kit. -DrewZilla *www.revzilla.com/motorcycle/ss-106-big-bore-kit-for-harley-big-twin-2007-2017

[@robmagill5123]

How come 106 and not 110?

[@abdu1989]

S&S or Hammer. Which one would you recommend for reliability?

[@RevZilla]

We don't carry Hammer, so we don't have any experience on their reliability. I can say, though, that S&S is known to be very reliable. -DrewZilla

[@FrankFitzpatrick-rh5dh]

HAMMER PERFORMANCE is the absolute BEST way to go when It comes to Sportster PERFORMANCE with RELIABILITY 🙂

[@liamstandish878]

for 2007 96ci what would be a good big bore kit upgrade and cam upgrade

[@RevZilla]

You can keep your stock cams with the S&S 106" Big Bore Kit, but if you do want cams as well, the best option will depend on your bike and the way you ride. For cam recommendations, get in touch with one of our Harley Geeks at [e-mail] or 877-792-9455. -DrewZilla *www.revzilla.com/motorcycle/ss-106-big-bore-kit-for-harley-big-twin-2007-2016

[@michealargyle1608]

I just bought an '03 HD Softail (FLSTCI). It has had the HD Big Bore Kit installed 4 years ago (3500 miles). It runs great but I would like to put the S&S kit on it because of the better workmanship. The kit that was installed was the 88 to 95. Can it be bored to a 103 or do I need to stay the same size and just switch over?

[@fogit4668]

You could keep your stock flywheel and get bigger cylinders but then need to have your engine case bored for the larger cylinders. That will require splitting the case open and taking out the flywheel. If you do that you might as well get a new and better stroked flywheel 4-3/8” (Darkhorse). If you are going to do all of that you might as well build a 117”.

[@29687ray]

do the cases need bored with this kit?

[@RevZilla]

No, you do not need to bore or split the existing cases with this kit. -DrewZilla

[@noobsperspective7946]

Revzilla I'm new to riding and for the iron 883 what's the biggest engine I can put on it. Iv been wanting to upgrade it just dunno what's the largest I could go.

[@RevZilla]

You can convert an 883 to a 1200. -DrewZilla *www.revzilla.com/motorcycle/ss-883-to-1200-conversion-kit-for-harley-sportster-1986-2017

[@noobsperspective7946]

RevZilla so I can't bring it up to a 1275 ? Or higher?

[@noobsperspective7946]

Also I'm talking about the 2017 iron 883 Dunno if that makes a difference I don't know to much about it

[@RevZilla]

Yes, Hammer Performance makes a 1275 kit, but we don't carry it. You'd get it directly from them. I believe that's the largest available. -DrewZilla

[@r.uncapher4677]

I have a 02 1200 Custom, what is the biggest kit I can get?

[@RevZilla]

You can go with the 1250 or the 1250 Hooligan (with cams) kits. There are some larger kits out there requiring more modification, but we don't carry those. -DrewZilla *www.revzilla.com/motorcycle/ss-1250-big-bore-kit-for-harley-sportster-1986-2017 *www.revzilla.com/motorcycle/ss-1200-to-1250-hooligan-big-bore-cam-kit-for-harley-sportster-2000-2017

[@daviesjack12]

Lets say i have the iron 883. I put this 1200 big bore kit on it. I have vance and hines short shots as well as screamin eagle heavy breather and the fuel pack. Would i need to change fueling after i put the 1200kit on it even though i have the fuel pack on it? AMAZING REVIEW BY THE WAY!

[@RevZilla]

Yes, you would need to change the fueling, but there are 883 to 1200 conversion maps for the Fuelpak, so you just update the map and you're good to go! -DrewZilla

[@daviesjack12]

RevZilla Okay. Many thanks for the help :)

[@keenanboone]

what woud be good for a 04 1200 sportster

[@RevZilla]

I'd recommend the 1250 Big Bore Kit or 1250 Hooligan Big Bore and Cam Kit. -DrewZilla *www.revzilla.com/motorcycle/ss-1250-big-bore-kit-for-harley-sportster-1986-2017 *www.revzilla.com/motorcycle/ss-1200-to-1250-hooligan-big-bore-cam-kit-for-harley-sportster-2000-2017

[@steher]

Waste Land Nation hit up hammerperf.com , you'll get the best kit with everything included and a ton of support.

[@JIMBOBALOU]

Just keep it at the stock 1200 and get some high performance cams thrown in it. That's what I would do if I were you.

[@RickyJimenez-tn8gy]

So with this kit do u just install it and that's it or do u need to get it tuned, I want to install one on my 2010 sportster iron 883 to 1200. I have a air cleaner and Vance and Hines short shots.

[@RevZilla]

You will need to tune it, and we recommend the Fuelpak FP3, as it has a map specifically for the 883 to 1200 conversion with air cleaner and Shortshots. -DrewZilla *www.revzilla.com/motorcycle/ss-883-to-1200-conversion-kit-for-harley-sportster-1986-2016 *www.revzilla.com/motorcycle/vance-hines-fuelpak-fp3-autotuner-for-harley-2007-2013

[@RickyJimenez-tn8gy]

RevZilla awesome thank you for the information, feel more confident on taking this project for my bike.

[@steher]

Ricky Jimenez0311 hammerperf.com will set you up with a complete kit and a map with the tuner specifically for whatever you buy. Can't go wrong with them. My 11 Sporty rocks.

[@marvinwhigham1290]

RevZilla

[@jedidiahthompson1170]

@@RevZilla Is the Fuelpak FP3 necassary for a carbuerated bike?

[@mariocasinetti158]

recycled beer cans HD heads? you know a seller by its arguments

[@joebelanger2919]

What about piston rings gap? Do they come to spec from S&S?

[@RevZilla]

In our experience, they come from S&S within spec-- but it's best to check before running anything. That said, plenty of people have just thrown them in without any trouble. -Kraus-e

[@tonyhernandezstudios]

@@RevZillaNO! no they dont. you have to fit the rings. file both to recommended gap specified in the instructions

[@richpurslow3283]

If you were running a fairly stock 96 twin cam, just with a stage 1 tune, could you use s&s heads?

[@RevZilla]

Yes, you could use S&S heads. -DrewZilla

[@richpurslow3283]

@@RevZilla cheers for the reply.

[@mariotrujillo4695]

Do I really need to dyno my bike after a cam upgrade or will tuning it with a tuner do the job

[@RevZilla]

A dyno will give a more precise tune, but tuners that offer auto tune functions will provide a slow adjustment of the initial mapping. -DrewZilla

[@HarleyBreakoutGuy]

Should i buy Harley OEM 110 kit of S&S 110 kit?

[@RevZilla]

That's up to you, but we certainly do like the S&S kit. -DrewZilla

[@garymoore3497]

It no longer matters. The HD motor company can not just lower prices. We now have access to Harley corporate balance sheets. This motor company in the red by almost 500 million. They are forced to sell bikes with substandard parts, just to generate the "shop-income" in some veil attempt to service some of these loans. This company in such a death spiral, is now only a matter of time before the banks start calling them in on some of these loans.........

[@chabib23]

Do I need to swap out the heads of my 883 as well?

[@RevZilla]

No. Cylinder head modifications/swaps are not necessary. -DrewZilla *www.revzilla.com/motorcycle/ss-883-to-1200-conversion-kit-for-harley-sportster-1986-2016

[@SaeedisMatic]

can't wait for the how to Lemmy ;)

[@jickdawmonelason7239]

Saeed alamri

[@ripmax333]

so if you purchase the big bore kit do you still need to get the new cylinder heads too? or you can just use the stock ones?

[@RevZilla]

No, you can use your stock cylinder heads. -DrewZilla

[@toddkoffler5681]

ripmax333 i

[@cweaver4245]

Kits for older model Kawasaki KZ1000?

[@RevZilla]

+C Weaver We only have kits for Harley motors currently. -DrewZilla

[@dresdenlafferty2429]

+Tony Vasconcelos I prefer to pick a bike that I like beyond the name on the side.

[@tony2227]

Dresden that's your opinion and I respected but despite myths there are Harley that are pretty good specially the new ones

[@mberlin1974]

Just ride your ride and don't worry about what others are riding. If your opinions are negative, then keep them to yourself. If they're constructive then feel free to share. This world is negative enough. I've owned 6 bikes in my life both Japanese and American and they all have their pros and cons.

[@chriskreiner1535]

+Marc Berlin well spoken sir

[@mikekutsch1791]

i have 575 red shift cams can i use them? or do you recommend somethings else?

[@RevZilla]

Yes, you can use Red Shift 575 Cams. Just make sure you tune the engine appropriately for the modifications. In addition, you may want to upgrade to performance valve springs. See the Fitment Matrix below. -DrewZilla *www.zippersperformance.com/index.php/downloads/dl/file/id/48/product/0/product_page_twin_cam_matrix.pdf

[@biggordsampson3013]

Mike Kutsch

[@NICKBALLOON]

Where could you get these bad boys installed? I live in California. Any recommendations?

[@RevZilla]

Unfortunately, we do not have any specific recommendations for installers in California. -DrewZilla

[@jeffreyricketts348]

Would s&s work with a softail

[@RevZilla]

It depends on your model year of Softail. You can use our bike finder or fitment tab on each product page to see if a kit works for your bike. -DrewZilla *www.revzilla.com/motorcycle/ss-95-hot-set-up-kit-for-88-harley-twin-cam-1999-2006 *www.revzilla.com/motorcycle/ss-106-big-bore-kit-for-harley-big-twin-2007-2017 *www.revzilla.com/motorcycle/ss-98-big-bore-kit-for-harley-big-twin-1999-2006 *www.revzilla.com/motorcycle/ss-97-big-bore-kit-for-harley-big-twin-1999-2006

[@tonyhernandezstudios]

Depending on year and mileage you are wasting time and money with stock pressed crankshaft send case to get crank pin welded, crankshaft balanced and blueprinted and timken bearing conversion first. Darkhorse Crankworks is good

[@walkingfearless_8110]

Would I be able to apply those to xl1200c ?

[@RevZilla]

Your 1200 is already a 1200cc, so you wouldn't be gaining anything. We don't have any kits to increase the 1200, nor do we have cylinder heads for the Sportster. -DrewZilla

[@marcusmc.a7087]

Does S&S make a 1450 kit for 1200 Nightster?

[@RevZilla]

No, they do not make a 1450 kit, but they do make a 1250 kit. -DrewZilla *www.revzilla.com/motorcycle/ss-hooligan-big-bore-cam-kit-for-harley-sportster

[@neilbrown82]

Hammer performance makes a 1275 kit

[@jamespowers1624]

No you don't have to remove the motor for softail anyway.

[@TigoAugustus]

The S&S website has a disclaimer on these not being legal for pollution controlled vehicles. Why is that?

[@RevZilla]

Certain localities have restrictions on modifications that alter your emission characteristics. S&S is playing it safe with that disclaimer. I would check your local laws if you aren't sure. -TeamZilla Chris

[@sanderpena]

Hammer now has a 1275 kit cheaper than this, and Hammer i s top notch too.

[@DynaNick103]

Sander Peña junk. There machine work is poor. I've installed a hammer kit and was far from impressed. Cylinders should not he oval shaped!

[@sanderpena]

heard alot of good things from hammer, what are you taking about oval?

[@sanderpena]

s&s are way overprice, hamer same quality or better.

[@DynaNick103]

Sander Peña inkesn the cylinders from hammer that I installed where ovalled meaning poor machine work. I called them and spoke to them directly. There explanation was the piston and rings will wear to the shape of the cylinder. This however is wrong and is just lazy and poor quality. Cylinders are exactly what? Circular not oval. Shitty product. Not reliable. This is my experience. I would not recommend there products

[@sanderpena]

Well you the first i hear talking bad about hammer, i will give them a try.

[@samcook2003]

Near or about how much HP will the 100 make in a twin 88 with stage 1 and Cobra true duels

[@RevZilla]

If the stock motor is in good shape, then you should be able to get 90+ or 100+ hp with the 100" Power Package and a good tune. Of course, there are so many variables that affect the end result, so this is the ideal outcome I'm listing. -DrewZilla

[@samcook2003]

I got 101hp and 98 torque clutch was slipping bad going to rerun the dyno after I replace clutch spring

[@thakery5720]

@@samcook2003 Once the clutch has slipped, the friction plates are toast. Instead of just a heavier spring, get an Energy 1 extra plate clutch pak. The spring is a little heavier and there is more surface area due to extra plates - these clutch paks are the best and quite reasonable compared to Harley stuff.

[@HarleyBreakoutGuy]

How many hours will it take to install 110 kit from S&S on my 2017 Harley Breakout? I am thinking about paying someone to install it for me but the dealership told me it will take 48 hours :(

[@RevZilla]

Are you sure they didn't say 4 to 8 hours? It all depends on how much modification is being performed. We recommend you get quotes from other shops to get a better idea of cost. -DrewZilla

[@RevZilla]

Well then that would be closer to 8 to 16 hours, which may be reasonable. -DrewZilla

[@legalman2891]

Good videos friend ! I got a 883 stock, do you know which Is the great hp gain after doing the complete stage 2 upgrade ? Tnks !!

[@RevZilla]

We do not have specific numbers for power gains. -DrewZilla

[@1deucenasty]

do I need to do my cams before I jump to the conversion

[@RevZilla]

No, not at all. Cylinder head modifications are not required. -DrewZilla *www.revzilla.com/motorcycle/ss-883-to-1200-conversion-kit-for-harley-sportster-1986-2016

[@BigRooster616]

Cylinder have to be so thin you can see light threw them ! I will keep my 95ci and 100% Reliability with 96 hp and 101TQ

[@tbone707]

rugerron67 um the reason why it’s new jugs an not boring out ur old ones are to keep wall thickness. Think before u type.

[@danstuehser2373]

I trust my 106 s&s cylinder walls over the factory harley 96" i had.

[@obfuscated3090]

All their cylinders are proven parts. They've been in production for many years.

[@ltsgarage7780]

I went to Revzilla. They dont have a big bore kit for the Evolusion motor. They turn around and send you to S&S. Which you can buy directly from. What good is this video besides getting you to Revzilla's site. It's just an add for them.

[@JDB5824RG]

recycled beer cans ??

[@gucci4871]

Lemmy,love your vids!

[@tattooedsoutherncali805bik3]

Where can I place a order

[@RevZilla]

You can order via the link in the video description or via the link below. -DrewZilla *www.revzilla.com/ss-big-bore-kits-for-harley

[@exracer2002]

Stroke your engine.......now what.....think I'll go for a bike ride now.........

[@grizmach]

Talk about increasing the Bore! JK Informative and entertaining as usual brother. Griz

[@scootfreeordie]

This is nice but, hammer performance is way better.

[@homerbart13]

Because . . . ?

[@2strokeme64]

Grant Sumsion look them up, they make BIG power with the 1250 sporty kit. like 100+ all day long..

[@Misty3133]

Recycled beer cans that HARLEY uses? Ouch!!

[@DynaNick103]

S&s is meant for the track. Not the st. Far from reliable

[@leelizardwilcox6271]

Im calling BULLSHIT on this statement as well.

[@judeloiselle7730]

Not true! Yes there performance but!!... most of the time they are super reliable so they can run on the street

[@beri232]

@@judeloiselle7730 not in my case! I bought the S&S Hot Set Up for my 2014 Fatboy Lo. I had swapped out the high comp 11:1 pistons and 640 cams to more conservative 10.2:1 pistons and 585 cams. My Indy had to tear the engine apart 3 times once they were done due to faulty S&S parts. First time…. a bad S&S lifter (this wasn’t really a big problem). After changing the lifter, they sent me home to break it in. On my way home, I noticed the bike didn’t sound or feel right so next day I took it back. The cam plate and oil pump from S&S had also been faulty. They now had to swap out those items as well as replace the jugs and pistons as they were shot. After that repair, the shop called me again… they had said they had replaced all the parts and were going through the bike but this time there was a problem with the pistons or cylinders. They believed the cross-hatching in the cylinders had not been done right and they were not retaining oil. So again, new pistons and cylinders. This time it worked. S&S gas suffered a serious lack of quality-control through this Covid bullshit. They farmed out a lot of their machine-work in order to catch up with demand…. this is what my Indy had said S&S had told them. My bike was done almost a year and a half waiting on S&S parts…. it was an absolute shitshow and I wouldn’t do it again!