How to de- restrict 900cc Triumph Street Twin/Cup/Scrambler/T100 for LOTS more power and torque.

Unleashing the power of the Triumph water cooled 900cc engine

[@Greenmachine305]

This is absolutely fantastic information. You deserve the highest respect for all of your hard work. I just knew the numbers didn't add up.

[@Billbothebear14]

If only Bike shops had staff like this, NOT white-goods salesmen, and who took the time to honestly explain stuff, I would appreciate the honesty.. I would. I have a broad understanding of motorcycle workings, but help is always appreciated. This works.. my new hero. Thank you. WF

[@kewintaylor7056]

Good employee need more money to emplyed ,u know....anyone capable most likely quit and make it's own shop....lol...

[@sterlingross9133]

George is British blue collar motorcycling tech, only problem is the market isn't huge for a lot of stuff with triumphs but they cater to the fans. Hopefully with the popularity of the new bobber worldwide we'll see some more great parts.

[@createmate]

Having had this fitted recently (April 2019) and finished running it in (300 miles back from Newcastle and a couple of other runs taking it to 500 miles) and then doing the oil and filter change, I can vouch for George's claims. The engine finally does what it should have done out of the factory. She has been released! :) George was excellent and I now have an even torquier engine and an unrecognisably better top end. Thanks to George for his great work in figuring this out and in delivering it to the market. A highly recommended upgrade for any Street Twin owner.

[@salskars6637]

createmate - Congrats. With the increase in HP, do you still experience the same vibration/buzz above 120kph (75mph) or does the camshaft smooth out the ride at top speed? I have a Street Cup and I'm hoping for a "longer" top 5th gear for highways.

[@createmate]

@@salskars6637 It smooths it out right through to top speed. It's a different bike/ride :)

[@salskars6637]

@@createmate - Hell yeah. Big grin. That's what I wanted to confirm. Now I won't bother with a 19 tooth front sprocket. Thanks for the quick reply

[@CaptainRambunctious]

Fascinating stuff and well presented and explained! Thank you...

[@johnDukemaster]

You make me want to buy one, and I don't even have a Triumph! Well done!

[@geoffozevans4500]

Well done, you've done a great job for Triumph owners, take a bow sir 👍😎

[@modarm]

Brilliant to see an expert discussing safe ways to do hopups for a stock bike.

[@LantzBrauBrewery]

I'm definitely checking your website weekly for that Cam! Seems like a no-brainer for my 17' Street Cup. Will buy immediately.

[@Nick_ADV]

So glad you guys are doing this! The one thing stopping me from picking up one of the new triumph 900 line bikes was the low numbers on paper. Seeing this is making me seriously consider adding one to my garage. I look forward to the upcoming videos and really think these are going to be a huge item for you guys since no one else is doing it!

[@ChadwickRider]

I love TEC... picked up a pair of their adjustable levers and progressive fork springs about 3 years ago and both have held up great!!!

[@JakeMchale]

Thanks TEC for this video. In the video you mention the part will retail at £250.00 and would be looking to make this even cheaper in the future. The cam currently is offered on your website for £360.00 - that's nearly 40% more than you mention in the video.

[@Smallbill100]

I really love your easy, detailed and complete presentation. Great work and very satisfying to watch!

[@adrianperez1484]

I dont even own a street twin, yet... and i’m interested in this product. Good work guys!! Cant wait for the next video.

[@nickyb6435]

Like Roy Castle said "dedication's what you need",great explanation.

[@HoofHearted801]

Watching this video April 2022 and it makes as much sense to follow as I'm sure it did when you made it. Thank you.

[@jean-lucelias5618]

I installed your cam shaft and it gave a huge difference in power.it is a complete different motor. Fuell consumption is even lower if jou ride the bike normaly in daily use.

[@TheStevemcqueen68]

Triumph need to work with you guys, great work guys

[@chrisbaker121924]

I'm sure triumph knew exactly what they were doing, fitting it into a band where it can be A2 applicable and not too much competition for the 1200s.

[@TECBikeParts]

The video is a guide only and I would suggest using it along side the workshop manual from Triumph or Haynes. parts numbers alternator cover gasket - T1268765 CAM screws T40 head - T3053005 Cam tensioner O rings - T3600199 + T3601276 Tightening torques Cam sprocket screws 22 NM camshaft bearing carriers 10Nm Head top cover 14Nm Alternator cover bolts 10Nm Cam tensioner 16NM You can safely run the bike with the stock ECU . I would check you have the latest software update from Triumph installed as the latest dealer update tune is a lot better than the factory gates tune. We have done testing with the triumph updated map and the Vance and Hines Triumph map and very little difference. For max power you can use a Power commander but we found that is was not really worth the money as the throttle body / air box was at almost max flow already. The only advantage was the timing could be advanced and rev limit raised ( both risky if you are not sure what you are doing) we also found fuel economy not as good with power commander probably due to the O2 sensors being bypassed. You can get a wide band O2 sensor add on kit for the PC5 but again this is expensive. As with all power commander and similar systems it is only as good as the tuner who has set it up on the bike and can be dangerous in the wrong hands.

[@salskars6637]

TEC Bike Parts - If the Street Cup is already vibrating in 5th gear at 75-85mph, does the increase in HP increase the vibrations? I just did 223 miles averaging 85mph (136 kph) so my question is, would the camshaft (de restrict) which increases HP reduce the vibration at higher speeds? Thanks

[@mcplutt]

And then there is the TuneECU app.

[@deniscullis8518]

Love this bloke he knows what he is talking about regards den triumph thruxton 900

[@mattybhoy1888]

I want to buy this cam how much are they and can you guys ship to Australia.

[@rkrzbk]

Got one of the de-cat mid pipes from TEC. Best mod I've done yet by far. Thanks guys 🤙

[@burtvhulberthyhbn7583]

Excellent dissertation . EXCELLENT .

[@Chewwy1973]

Yet another legend Geordie! I’ve got a 1200XC and I’ll be taking mine to my Triumph dealer and I’ll be asking my some key questions. For sure I’ll be De cat’ing my bike as a starting point

[@phillipgreen8206]

loved you research . will be ordering one once finished running bike in and wife passed her test.

[@MegaKei1]

Hello from the Philippines. I love the video and honestly I had my jaw on the floor for most of the lecture and dyno graphs. It's astounding how much power you were able to unlock with such simple mods. I hope you develop more power parts for the Thruxton 1200 too. Cheers.

[@timholt8141]

Really interesting. Love the Scrambler but your cam sounds like a good upgrade. Many Thanks for the video.

[@paulm2467]

Triumph must have seen this because the 2019 street twin is producing very similar numbers to this cam upgrade.

[@patthewoodboy]

Triumph probably bought one off George covertly and copied it :-)

[@cosmyfication]

Exactly

[@cosmyfication]

It’s still pretty crappy beyond 5500 rpm. So still a low rpm bike

[@thomaselliott573]

these idiots are only interested in marketing to social wanabees. It has very little to do with motorcycles. Unfortunately that is what has happened. The cappo late set is now more powerful than the bikes.

[@wolfpackpete6408]

Is that power at the wheel or at the crank?

[@ronnierush9379]

Great Work, nice to see that some people still do descent research in performance tuning. What it does prove is that Triumph for some reason “known only to them” crippled the potential performance of this engine which as an owner has greatly p*s*ed me off. I would definitely do the work but I guess if you were to do a camshaft replacement like this it would void all warranties you have on the bike?

[@G58]

If they decided to get difficult, Arguably you could claim it wasn’t fit for purpose when you bought it...!

[@hamishsb]

Brilliant! Great bit of geek viewing on a Weds night. Can’t wait to do it George !

[@thierrygoli4271]

I have a T 100. You convinced me to change for a T 120!

[@dinf1110]

This guys done his home work. Great work on getting those numbers and being honest

[@FroggyCrimes]

The 2019 model of the street twin seems to line up with your torque/hp curve with the new camshaft. I think they may have just done exactly what you did and sold it as a massive improvement lol.

[@thebeardedcanadianadventures]

I cannot wait for you to sell the new cam....I would love to purchase one. Great info!

[@mistreku]

Would be awesome to see some snippets from when the bits were fitted on the engine! I bet that would boost the views/likes a lot! Also, quite interested what you could do with the Thruxton. Brill vid, mate, thanks for sharing!

[@mcplutt]

What bits?

[@markcheetham7858]

I've got a 2018 street scrambler and from new the first thing I changed was the exhaust to a V/H single decat version just to allow it to breath better, but since I've had the tec camshaft in and a tec air filter the bike is awesome, so all I'm going to say is get one put in and see for yourself....

[@G58]

This is very very interesting information George, and I don’t even own a Triumph. Thank you for sharing. I’m learning a great deal from all your vids.

[@WEEGIMEDIA]

Great work look forward to the T120 development work appearing on your channel , thanks .

[@mattg4934]

Except if the T120 had much more power I think you may fall off the back - almost happened to be a few times (I have done a few power increasing mods) already due to the upright seating position.

[@tinks43]

Well done George. Onwards & upwards! 👍🏻

[@volt7cooltangs701]

Utter genius. I’m only 5 mins into this vid and I love it.

[@TECBikeParts]

To purchase see- www.tecbikeparts.com/product/camshaft-de-restrict-street-scrambler-900cc-water-cooled-and-later-chassis-number-street-twin-cup-t100-up-to-2019/

[@exothermal.sprocket]

Really wish Triumph would run a high performance model for both the 900 and 1200 engines with all the goodies mentioned. Bigger valves, twin TBs, higher comp, stage 2 cams, higher flow airbox and exhaust, and the brakes and suspension to suit.

[@thomaselliott573]

You mean normal performance instead of marketing performance

[@steverolfeca]

I believe it’s called the Thruxton...

[@generation91]

Wouldnt sell any thruxton

[@kraut4894]

An absolutely fantastic video. It makes an absolutely fantastic game changer

[@sidwilson9556]

Brilliant video and really well presented. Informative and entertaining. Well done!

[@peterkrajnc9607]

Great work! Fantastic explained. When everything will be fine, my wife will drive a T100 Bonnie and I 'm looking for the Scrambler (both 900cc watercooled)! We are interested in upgrading the bhp for a better reliability of These lovely bikes! The New Bonneville Familiy is the reason why we made the A license in germany. Please set us on your list for upgrading the engine! Thx a lot, Peter

[@lewismetcalf4545]

This has reassured my desire to buy one of these when I'm 19. get my a2 and ride it a2 restricted till I'm 21, get full A and then swap cam and exhaust, plus weight reduction cause I wanna do some mods to the looks of one if I buy one.

[@martinmead7554]

Awesome video. Such a pleasure listening to someone who knows their shit.

[@ratsstuff1952]

I have a 2016 STwin with decat, straight through V&H, DNA filter, snorkel removed, Dart classic screen and stage 1 cam. It flies to the ton (on a private road). For me as a 100kg guy it really means you must do the suspension. In standard trim the chassis really can't make best use of the power. I have dropped in 8.5n/mm linear springs in the front with standard fork oil and there is an improvement. Next month the Hagon 2820 (10mm longer Street Cup spec) will arrive, and that should sort things out. My conclusions? Do it. The bike is transformed. It is now a very capable roadster and an excellent all rounder and surely the prettiest.

[@MrEddieo1]

I just got back into riding and picked up a used T 100 with 1,000 mi on it. A takeaway for me is never to upgrade to a T 120 but to modify the T 100. Or get a different bike all together, Triumph of course.

[@James_Sovereign]

I was looking at an early model Street Twin but by the time I do all the performance upgrades, including suspension and brakes, I'm only a few thousand short on the price of a used Speed Twin.

[@johnmontemurro5290]

What a great video, looking into purchasing a Street Cup

[@strandwal6878]

My dealer installed the cam for me some 7 months ago. After seeing the video, I thought this might be the solution to unleash the potential of my street scrambler engine. Before the cam was installed I fitted a K&N filter and removed the snorkel. Engine felt like it breaths better, throttle response improved and the sound was notably nicer. Then the cam. In the video there's a few claims by TEC: Huge or significant improved power and torque and throttle response and louder engine. Louder engine: True, nice sound that is. Throttle response: True, however not that brillantly improved. More power: well, I think so. However, by far not that much like in de video. Same for torque values I guess. OK, I don't have a dyno run to prove it, and I didn't remove the cat. Still, the 70bhp is something from a Hans Christian Anderson story if you ask me. It's just not what I get in real life and I don't need a dyno to prove that (I will put in on a dyno soon though). OK, before the cam was installed, power dropped away after 4000rpm and on the motorway speeds of 120+km/h were hard to reach. By now, it just keeps on getting stronger until you hit the rev limiter. That by the way kicks in pretty strong at about 7000/7100rpm, so keep an eye on the display for the rpm. If you want to be sort of fast on the bike, keep the revs over 3500-4k and the bike is fast-ish. Below that, well, it's a different story. That also makes me wonder if bottom end torque is lower than before the camshaft swap, but I'm not sure. To make the bike run a bit less lean (standard bike runs almost dangerously lean) I installed the TEC booster plug. I think that helped the bike not to stall anymore like some folks report when riding at low revs, for instant on a tight roundaboud. A friend of mine also put in the V&H full system exhaust without the cat and also doesn't get the values shown in the video. He got stuck at 55bmp/74nm no matter what he tried. He tried 98 and competition 103 octane fuel without ethanol additives (so just pure petrol), and still doesn''t get the values shown on the dyno. He put it on the dyno and actually got lower bottom end torgue…. In short: Yes, I'm happy with the changed engine behaviour. Bike runs smoother and seems less willing to stall. But, the power increase if far from what I see in the video. And if TEC says that charts and graphs are not that important, well don't show them yourself in the video then. If TEC claims the values are reached only by burning 98, well the's also not the solution if you ask me. That's been tried by us and no increase whatsoever. However, there are people that seem to get more power and torque, other people don't. Why you might ask? We haven't found out why yet and we hanven't received a solid answer from TEC either. What about the brakes you might think: Well the bike won't be faster and you don't need to put on stronger brakes in my opinion after the cam swap unless you're not happy with the brakes before the cam swap. The bike is not a race bike and 170km/h-ish (107mph) is the max, cam swap or not. It just takes a lot less time to get to that sort of speeds. I wouldn't want the bike to be faster though since without a screen it's just not comfortable at such speeds on this bike. You need full fairing on this bike to reach 120mph and ruin all of the beautifull scrambler looks. Besides that, if you want a fast bike go spend your money on something else. So if you want the bike to run a bit better and accelerate a bit faster, spend the money and put in the cam. If you want a significantly stronger bike (more power, more torque like in the video), get yerself another bike or a 1200 twin. When I put it on a dyno, I'll keep youse posted.

[@salskars6637]

Strandwal - What's the update on your dyno?

[@salskars6637]

Dyno results? Updates...

[@strandwal6878]

@@salskars6637 I haven't put it on a dyno yet. I probably will when I get a chance to flash the ECU. However, I 've been to the Eiffel in Germany for three days with 8 friends all on heavier/ faster bikes. Thanks to the cam I could easily keep up with them in de twisties and hills and forests. All of them were surprised how well the scrambler did, even on the motorway. First they were joking about the 'mopet' , after three days the scrambler received respect by all of them. Without the cam that wouldn't have been the case. Next: cutting out the cat and try to flash the ecu.

[@salskars6637]

@@strandwal6878 TY for the feedback. When you're on the highway (for a 5 speed)) do you still desire a 6th gear? or did the cam make 5th gear "longer" more like an overdrive highway smooth gear?

[@strandwal6878]

Sal Sonic it’s ok. See the bike isn’t ment to do a lot of motorway time. Just not suited well enough for it. 5th gear is fine. See, if you’d put a sixth gear the revs will be lower but it wouldn’t be much extra useful or anything. Don’t expect miracles like in the TEC video but it’s a great improvement all together for relatively little money

[@Petrolhead66]

Wow, such a great production ;)

[@MDLXL]

Oh I really need this camshaft indeed! Please let me know when available to make an order! Thank you so much for the info.

[@johnwatson3400]

Very knowledgeable, great video, thanks very much for putting this out👍

[@INNOVVDashCam]

Brilliant! Great mod! Appreciate, learnt a lot.

[@teamgas]

Brilliant work George, maybe I will turn my attention to the newer bike!

[@Mobab_blue]

I can't wait until this is available. Great video

[@mikejcerasuolo4589]

I have a 2014 triumph bonneville,does it have the restriction cam ?

[@brutalbrital]

bloody great video, very informative thank you very much

[@ipohboy]

excellent, clear information. Thank you.

[@Scrambled_Possum]

Thanks George, I have the Street Scrambler and didn't understand why the HP was so low for a 900cc motor. I'm assuming this would void the Triumph warranty, at least on the engine. I've only had the bike for 8 months, so I'll have to wait a little longer for the cast cam if you take it to production. I sure hope you do.

[@kismomotors9829]

Very informative and interesting video to watch. Keep up what you're doing. Love your work.

[@Asillyhobo]

I really do hope y'all follow-up on offering the camshaft for sale, and how-to video(s) for the installation. One of the major drawbacks pointed out by reviewers is that the T100/Street Twin lack enough power for pillion riding/highway touring compared to the T120. However, the T120 has gotten some negative attention for its dodgy throttle input compared to the lighter and arguably more reliable Street Twin/T100 900cc motor. It's bad enough that Triumph discourages the installation of installing dual discs on the new T100 as opposed to just getting a T120 but this takes things to another level.

[@Asillyhobo]

I also hope this can be made available for the US market!

[@flamintasty]

@@AsillyhoboYou just order it and TEC will send it.

[@nigelfisher6896]

Great video. Thanks for putting this up. You should do something for the Honda NC750. I'm sure there more power to be had out of this motor.

[@stevieg7403]

This is a fantastic video!! Great information.

[@jetdr]

Thank you, I was apprehensive about purchasing before this video. Wasn’t impressed with the total power curve. Seems an easy enough fix.

[@xlankex]

So..................can I buy the camshaft somewhere?

[@brahnseer3512]

Has the new Triumph Street twin have a new cam giving the same results as this? That might explain how diffident George was in this video and also explain the long silence between the last two videos. Was Triumph standing on his toes?

[@doncarlo5]

1. I had to subscribe 2. I need to give this shop a go 3. my next bike's definitely going to be a Triumph twin ( how about a speedmaster ?)

[@peterhoward492]

I would just like to concur with all previous positive comments Thnx!!!

[@joelovesbikes2882]

Hi, looks like a must have upgrade. Is this upgrade available for a 2022 Street Twin? What will this do to the warranty?

[@Millektm]

How the hell did the British motorcycle industry collapse when there is companies out there that have the excellent knowledge of guys like this .Bloody unions !! Great video,a pleasure to listen to.

[@michellejansen38]

Shit management but good engineers and workers, not unions imo.

[@Romski1978]

Hi guys how much £££ will cost to tune up the stock sreet twin, to get 70bhp and have some nice bike without worry to blow the engin up and safe ride. Regards

[@larrynorsworthy8582]

In stock tune the bike has pleasing torque and ride ability and should last forever.

[@adamdarmstaedter1256]

Does the restricted cam only apply to the 900s produced AFTER the 1200 was released? I have a 2011 air cooled Bonneville SE. I have added some Bassani mufflers, but it is otherwise stock.

[@mark.e.p]

He mentions the XSR 700 motor which is an outstanding motor at 75HP and a far lighter bike.

[@watsonmrc]

I'm in 😀 do you fit these and if so how much? Mick Yorkshire. Ps fitted your street scrambler tail tidy looks great thanks. Keep up the st scrambler mods and videos please

[@russ02281990]

Still waiting on the ECU tuning video

[@MarkSmith-io3qd]

Great to see ‘proper’ British engineering is alive and well. Are you planning on expanding into the other Triumph models? I have a Tiger Explorer and would like to improve the suspension and handling. Cheers guys. Always enjoy your videos.👍

[@ericb252]

Amazing work!!!! Totally interested

[@wordsmithgmxch]

George, wow, great vid; I learned a lot, and when your next one comes out, I'll be right there to watch it. But you also confirm a long-held suspicion of mine: that Triumph isn't a motorcycle company, but a marketing company that sells motorcycles.

[@RomanSladek]

Great job! Can’t wait for it.

[@truthseeker-jwnightmares4351]

I want one as soon as possible!

[@BlackbeardBikes]

Anybody had a remap after this? I had these mods and just read about a street twin with x pipe that burned out exhaust valves -

[@mcplutt]

Remap is recommended by many.

[@BlackbeardBikes]

@@mcplutt This is a 2017 model and there was a 2019 Triumph ECU update, installed as a matter of course but had no noticeable difference, possibly long term engine running benefits. These engines ECU coding still locked down so can’t tune for performance by Tune ECU but they are perfectly able to adjust AFR by themselves for minor modifications. So who exactly are the “many” who recommend remapping?

[@gmc3578]

Camshaft sales man... thanks! - I'll take that 25hp!

[@epicdude931]

I heard simply upgrading to better cams that are non restrictive and better flowing heads added like 10 hp right off the bat

[@ashleycattermole87]

Gutted... justvwatched the video, got very excited, went to the website and it's not listed for sale!

[@Justin-gr4yi]

Are you still producing your camshaft upgrade part? Hard to get a response via email.

[@anderseriksen2282]

Great explanation on a topics that had me peeling hairs out off me head - I really was woundering on "that low" HP on the T100, but more on the T120, clearly I understand, and apresiate the Togue - so Sir would you pls make the same test on a Bonneville T120 stock - - Best Regards from Denmark

[@brocluno01]

Well done. Hats off. Now Nov 2018, have you gone to cast cams and are they readily available?

[@georgemilburn6213]

We stayed with steel billet cams as the saving with forged or cast was not really significant. cams available now.

[@johnparola3490]

Thank you, very interesting.

[@hfgihihih]

Waiting for this to come out is like waiting for the Tool album to come out

[@TECBikeParts]

CAMS available now please seeour facebook page for link facebook.com/TECBikeParts/

[@whittlad]

Great and very informative video👍

[@ph8823]

I've watched this video twice and I have to say you really put your research to the test. I did hear you mention that the problem with the older motors was that the clutch wasn't up to the job. I have a 2005 triumph Speedmaster and i did notice the clutch kind of limiting the bike. Im about to replace the clutch any advise on perhaps using a different clutch to get a better balance, maybe a different cam.

[@Hoodeene]

Impressiv... One question: Can the other components handle the Power increase of the engine and the bike? Thnx! Where can we get that modified Camshaft? Cheers

[@Jafmanz]

the front brake is not really up to it imo.

[@mike9250]

Wow. Good job.

[@adrianthrockmorton7557]

Any change in gas milage? And any update as to when you'll do the tutorial video? Will this damage the motor at all?

[@WyreForestBiker]

Do you mean fuel consumption .. gas is what you cook with :)

[@gennaromoraca4547]

Hi, I would love if you can make the video/guide which you were talking about at the end of the video, on which is the perfect combination you recommend in terms of customizations to make the most in performance from this bike. Right now I've installed the V&H 2:1 Pipe with its own map and K&N filter. I was wondering if purchasing the Dynojet Power-Control V would also help. Nevertheless, I'm thinking to take the camshaft from your shop, especially now that Triumph basically did the same improvement on the new Street Scrambler 2019. But before to do that, I would like to hear from you. Thanks!

[@Frankis007]

I'll buy one thanks

[@trouty65]

AWESOME Video ! Thanks for sharing :-)