Front Fork Full Upgrade Kit – Progressive Springs and Cartridge-type Fork Top Pre-Load Adjusters

(151 customer reviews)

£139.99

For conventional fork types only, will not fit the later USD type forks (Marzocchi forks on later Triumphs).

NOTE – Please let us know if your bike has cartridge or standard forks at checkout, if this is not specified it could delay the order from dispatching. (This is particularly important for Street Scrambler and Street Twin models which switched to cartridge forks in 2019).

This will totally transform the ride and comfort of your bike!

Important: You must accurately tell us your bike’s year & model on the order (there is a box to fill in during check out).  This is important so we can supply the correct length spring and spacers if necessary.

These kits will give you the following:

  • Less dive under braking
  • Less crashing over potholes
  • Straight replacement for the standard liner triumph fork springs no mods required.  Spacers and shims will provided if needed.  For some models, the original spacers are the correct length already.
  • Huge improvement in travel comfort and handling over stock springs with reduced crashing over bumps and less dive in braking.
  • Easy to fit with instructions provided.
  • The adjusters allow you to easily adjust the pre-load on the front end.  Allowing fine tuning of the feel of your bike and make it perfect for you.

See the product reviews on our site to see how much difference they made to people’s bikes!

If fitting to Speed Twin, T120, T100 (Later Cartridge Type Forks) or Thruxton 1200, please watch this video:

Quantity:
Daniel L.
November 1, 2025

Front end stability

Excellent stability and reduced diving under breaking on a 2020 Speed Twin 1200. Every pleased with the result, not a small change in behavior.

DAVID F.
October 2, 2025

front suspension t120

Service was excellent from tec parts the upgraded front suspension parts look good quality as they have not been fitted yet thats all i can say...thanks for the service..

philip H.
September 30, 2025

No more Bouncy 1200 speed twin

Early speed twin diving front end don't want to brake too hard. I can now wind on the front brake and not feel as if i am going to hit the stops. Now have a feel that triumph should have installed. And it is an easy install.

luca D.
September 29, 2025

Solved Problem

Bonneville t120 2023, best upgrade, recommended.

Anton
September 26, 2025

What a smooth ride !

This small upgrade makes a huge improvement to the ride. Bumpy roads, speed traps were not felt significantly. No excessive diving when doing front braking. "A" class shop, fast delivery.

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Martin J.
September 14, 2025

Good quality.

Bought several times and I’m still satisfied with the shipping lead time and quality of goods. Thanks a lot folks.

Stuart D.
August 18, 2025

Massive Improvement!

Completely change the feel of the bike, more planted, more feedback, more grip, just more of everything. I’ve massively upgraded my bike and this is probably tops them all. Great price for what you get back. Confidence inspiring! Buy, buy, BUY!

Callum
August 5, 2025

Unbelievable upgrade

Unbelievable upgrade for the money. This has massively improved the handling, braking and comfort of the bike for only £140. Would recommend this to anyone with a T120.

Claudio D.
August 5, 2025

Grande amélioration

Les ressorts TEC apportent un grand confort à la fouche: les petits chocs sont éliminés et les grands sont bien absorbés. Étonnant au vu du faible débattement. Seule la qualité des entretoises en plastique mal coupée est discutable. Néanmoins je recommande.

Steve M.
July 28, 2025

Progressive springs

Thruxton 1200 progressive springs with adjustable preload, absolutely excellent upgrade would highly recommend

Gary H.
July 28, 2025

Pefect

Great product, great service and great postage.

Andrew C.
July 27, 2025

T120 Progressive Fork Springs and Pre-Load Adjusters

Recently fitted these to my 2019 Triumph T120 Bonneville. Took an hour or so to fit and pretty straightforward. Definitely a marked improvement at slower speeds and in town where the front now rides imperfections such as potholes etc much more smoothly without the 'crashiness' experienced before. Not sure the pre-load caps are a necessity on the Bonnie as I have them on the lowest setting and as they protrude further from the fork tops they do touch the handlebar cables and front brake hydraulic line. Shouldn't be an issue though as they all move together when turning the steering (i.e not rubbing against each other.)

Craig B.
July 13, 2025

As advertised

Made a huge difference to the comfort and handling of the bike would recommend to anyone.

bongkyun P.
June 9, 2025

Good.

It has good performance for the price and installation takes less than an hour if you watch it on YouTube.The only regret is that the preload controller is not described, so it would be nice to have a manual explaining how to adjust it.

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Graham H.
February 6, 2025

Excellent

Excellent product Fitted perfectly Easy to fit Would definitely recommend these guys

Steve P.
January 31, 2025

Worthwhile Upgrade

Speaking as a very sporty rider, I found the factory fork set up extremely inadequate, and the set up tried very hard to eject me from the bike when braking deep into a corner. The new springs and caps are so easy to fit, even a bush mechanic like me took under an hour, and now the bike tracks where I want it to in corners, and I can have a lot more confidence under brakes, a massive improvement over standard. Only downside is now I can start to notice the deficiencies in the shocks .....

Peter H.
December 16, 2024

Triumph Street Scrambler 900 2022 model

Simple to fit. Worth watching the video to accompany the instructions. I’m approx 80 kg with kit, have preload wound in 2 full turns. Very impressed after 1st ride. Less dive under braking, front end feels smoother & more compliant - bike feels better damped over ripples & corrugations. I have previously fitted K-Tech rear shocks to the bike, which highlighted the shortcomings the existing of the front end. With this kit fitted, bike now feels smoother & more planted. Recommended upgrade.

James G.
December 4, 2024

Money well spent

Spring kit delivery was very speedy. Cost of kit was very reasonable (especially with discount) Fitting was easy, although instructions somewhat brief, found a video on YouTube that helped. Big improvement in fork performance, I managed to find sufficient road imperfections to test them thoroughly,

Vince J.
November 27, 2024

Progressive front springs

Riding around town was a nightmare,always looking for holes in the road now I simply ride over them as if they weren't there.Massive safety gain,no more diving when braking, also bike feels more responsive in bends. Excellent upgrade, well done Tec

Tristan L.
November 15, 2024

Definitely worth the money

Completely changed the handling of the bike. No more brake dive or wallowing and is stable through corners. Combined with Ikon rear shocks at the same time for the rear end. Super easy to install as well. My only gripe would be that if you were super light, it may be slightly oversprung with the preload caps.

WJ
October 25, 2024

Progressive springs

Transformed the bike, highly recommended.

Frederic A.
October 20, 2024

Progressive fork spring doenT120

Easy to install , thanks to the installation video ! Weldone BR F.

Paul R.
September 23, 2024

Improvement over stock suspension

Not covered many miles yet but noticed improvement. I’m quite lightweight and have left fully wound out and have noticed smoother action.

chris T.
September 16, 2024

Progressive forks & sump guard

Great products 10/10 Communication was first class can highly recommend

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Dave R.
August 22, 2024

Springs and adjustable fork Caps Bonneville T120 2020 Model

I have ridden the bike a couple of times since fitting the springs and caps and so far they appear to be a worthwhile improvement . I will fine tune the cap settings and try different pre-load before finalising setting. Delivery was quick using 24 Hour tracked.

ROBERT P.
July 5, 2024

Better front end ST 1200

Package arrived, all parts accounted for, quick recap courtesy of “you tube” and one hour later (including brews) out on a test ride! Absolutely brill 👍

Doug B.
June 25, 2024

“It does exactly what it says on the tin”

Easy to install only a half hour, I put a trolley jack with a piece of wood to span the bottom frame rails, removed handle bar fixings and “rolled” bars forward onto a folded towel, unscrewed offside cap first, wired spring from above to let all the oil drain back into the the fork, repeated for the curb side, replaced original parts for the new Tec ones, don’t forget to swap the “O” rings if you have the preload caps, replace handle bars, check everything for tightness. The difference is really noticeable all the small bumps you feel in the handlebars have gone, front end feels more positive, only wish installed these before the IOM this year 👍

gilles G.
June 20, 2024

Transaction efficace

Ras

Mark P.
June 10, 2024

Progressive springs and preload adjusters

I must say the springs have made a big difference to the ride quality, the preload adjusters I have left fully wound out at the moment the springs are doing everything I need but we will see what happens after a few more miles once the springs have softened a little , I’m 16 stone and l do a fair amount of two up riding. Very happy so far

Tomáš K.
June 6, 2024

Vše funguje k mé spokojenosti. Snadná montáž a nastavení dle videa.👍

Luciano M.
May 3, 2024

Seems like a good improvement

They work well, it's a shame about the high amount of import taxes (in Italy) and shipping costs, which raise the cost dramatically, making the purchase less convenient.

Mike J.
May 2, 2024

Fork springs and caps for Thruxton 1200

Very quick delivery of upgraded fork springs and caps. Good price too. Would definitely reccommend.

Rafliz R.
April 20, 2024

Triumph t120 fork springs

Gr8

Steven S.
April 8, 2024

Great Improvement

Really easy to fit following the video. Not used the adjusters yet but even on the settings out the box I can feel a difference.

Luis C.
January 20, 2024

Front fork upgrade kit

The suspension kit fit and work perfectly, it is a excellent upgrade for the bike

Alvaro F.
January 7, 2024

A very good improvement

My machine feels much smoother without losing braking efficiency. It's practically another motorcycle. I am happy with the product. Shipping was only 5 days to Mexico which is very fast. I highly recommend it.

Marco L.
December 16, 2023

This is THE missing part of the bike!

Finally did a 300km+ ride today covering motorways, countryside hilly roads with lots of corners. I must concur that the installation of TEC spring kit with pre-load adjuster completely transformed my bike's handling. I love the new style of my riding now with full confidence at the curves of the roads. Highly recommended 👍👍👍

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Timothy W.
November 16, 2023

Great product

Great product easy to fit and a vast improvement over std plus they look good which is always a bonus 😀

Philip J.
November 3, 2023

Front fork upgrade

Not fitted yet but good quality looking at them

Dickon C.
October 29, 2023

Great improvement

Took a few attempts and test rides to adjust correctly.. but now it’s a big improvement. As a 66 year old I need comfort.. the Bonneville “‘out of the box” is fine but these springs take it to next level..

Stuart M.
October 8, 2023

Progressive Springs Full Upgrade

Great upgrade for the T120. Smooths out the ride compared to the OEM springs. Not played about with the pre-load, have just set them mid range, but feels great as is. I’m not terrified of riding over a small pot hole now.

SIlvester R.
October 7, 2023

Schaut gut aus

Leider konnte ich die Federn noch nicht verbauen. Lieferung war top Genaues review folgt

Neil R.
September 8, 2023

Fantastic Upgrade and Service

As many reviewers have posted the progressive springs just have to be the best value for money upgrade to performance and comfort. Great quality. I’ve had the springs fitted with the pre-load adjusters as extras (yokes) for two weeks now covering around 500 miles at their maximum setting and haven’t seen the need to wind down the pre-load as yet. I weigh 19 stones. I might experiment with the pre-load after another 500 miles to enable better gauging of the difference. First time customer of TecBikeParts. Order received in two days. Email confirmation of order processing and dispatch. This is first class service. Highly recommended.

Christian J.
August 26, 2023

Outstanding

Simply put, this has to be the best upgrade you can make on your T120. Simple to do - search Delboy’s Garage on YT and just follow. I’ve kept full wound in on firm and the ride is super-compliant. I might dial it back a little over time to see what the difference is. Very happy with this.

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Raymond C.
August 25, 2023

Fork spring upgrade

A noticeable improvement in handling and riding comfort. The parts were dispatched by return and arrived in NZ within 10 days.

Andy W.
August 19, 2023

Full front fork up-grade kit

Very easy to fit, 30mm and 32mm socket essential parts delivered on time well catalogued and kept informed good video to watch

dean H.
June 22, 2023

Fork suspension upgrade

I called George and found him extreemly helpful in disscussing my needs and advising me which choices were best for my rider wieght and bike model. The parts were dispatched and received the next day and has George had instructed they were fitted very easily. The difference in handling, comfort and performance are worlds appart from the standard equipment. Id like to offer a great deal of thanks to Gearge and his team for first class service and quality, and lots of freindly advice. Thank you George Matthew and team. ........ Dean Hammonds

John Z.
June 19, 2023

Progressive fork kit

Good service again from tec,the fork kit was as described and comes with everything you require to make your suspension work as it should ,unlike the standard Triumph parts,recommended

David V.
June 6, 2023

Top class front suspension upgrade - don't wait to do it !

Recently bought a T120 (May 2023) and although I knew the rear shocks were crap from the test run I thought I could keep the forks as is. 1600 km later - after about 3 weeks of running in and getting used to the bike I could already feel from WEEK 2 that I would have to do something up front - quickly. I put this TEC upgrade in easily enough and I am in awe of the difference - for less than the price of that useless little flyscreen I had added. Just do it guys. Don't wait. The progressive springs just eat up the little road bumps at any speed and the overall handling at higher speeds is so much better. Smoother and feels more stable. The Delboys Garage video is perfect to help. You will need 14mm and 19mm spanners and 30mm and 32mm sockets. For the moment I've left the pre-load on x10 90° turns as the video and I like it like that. Pretty loose. Shame on Triumph for skimping on better suspension but cheers to TEC for a good, affordable upgrade.

STEVEN B.
June 6, 2023

Front fork suspension upgrade

Fitted the new springs inside the front forks. Rides really nice fully loaded luggage with two people on the triumph bonneville t120. Really happy.

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