Progressive fork springs for Watercooled Triumph Bonneville T120 (2016 onwards)


TEC upgrade progressive fork springs kit with instructions which fits Triumph Bonneville T120 (2016 onwards)

Straight replacement for the standard liner triumph fork springs with no modification required.  Comes with the necessary spacers.

Huge improvement in travel comfort and handling over stock springs with reduced crashing over bumps and less dive in braking.

Highly Recommended with our rear shock upgrades for a total transformation of your bikes comfort and handling or we offer a no quibble full refund!

12 month warranty.

Detailed instructions provided.

Fitting guide:


Customer Reviews

Based on 42 reviews
William Webb
Good service

This progressive springs work wonders. Have sidecar fitted makes all the differance. Second time have fitted their progressive to a triumph bonneville

Richard Satur
Great value for money upgrade even if you live in Australia and also pay freight costs

Upgrading the fork springs on a Bonnie is probably one of the best, relatively low cost handling upgrades you can do as the stock front suspension is a bit harsh over badly underfunded public roads.
After watching Delboys garage video (highly recommended) of him replacing his springs I decided to take the plunge. I would consider myself a mid level home mechanic and decided I could tackle this job myself.
I do not have access to a fancy bike lift so used a car jack with a piece of wood under the engine (where the catalytic converter sits).
Warning, the front suspension will instantly collapse when you take out the top leg cap bolts if you do not support the bike properly!
It would probably help if you had someone else to assist you keeping the bike steady and upright if you are unable to tie down the bike.
The top endcap suspension bolts are fairly delicate and easily damaged.
I would suggest either placing a cloth over the bolt to try and limit the damage from a wrench.
Also try and use a wrench that grips the flat sides of the hex nut rather than the pointed ends.
I'm very happy with the end results. Much improved the front end making for a more comfortable ride.
I payed the extra and used DHL shipping. Took about a week to get to me in Australia.

thomas reilly
front springs

easy to fit much better on bumpy roads

kevin rance
fork spring upgrade.

fitted the springs today very easy to fit not had the chance to test ride with the new springs fitted yet but i have no doubt from what i have seen on you tube
i have every confidence in them and they will make a difference.

Robert Abbley
Side stand shoe

Fits brilliant and very well made and sturdy