Progressive fork springs for Triumph Street Twin 900cc


TEC upgrade progressive fork springs kit with instructions which fits Triumph Street Twin.  They will not fit the updated models from 2019 onwards as these have different suspension specifications.

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

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.

Customer Reviews

Based on 13 reviews
Martin Biddle
Fork springs for street cup

Very helpful with Query regarding suitability. Excellent quality and transformed the handling. Second time dealing with TEC, both time's a pleasure to deal with.

Just do it...

I've put about 2000 miles on the 2017 Street Twin, and while I love the bike the front end is shocking in every sense of the word. I was leaving yesterday on a 500 mile weekend when these arrived. Delayed my journey by an hour and dropped them in. Just the springs, nothing else.
Simply, they have transformed the bike from a painful, wriggly mess to one that handles bumps ok and holds a line round corners. It's not the ultimate in front suspension, but for 70 quid it's a no brainer... just do it.

Street twin fork springs

Very easy to fit, makes a massive difference, I would recommend it to everyone

David Fost
Progressive fork springs

Much improved steering especially on bumpy corners

Hector Connell

I've bought the progressive front springs upgrade for my 2019 street twin, I bought these two weeks ago, I fitted the TEC adjustable gas shocks back in August, they made such a difference to the handling and also comfort of the bike that on the strength of this I bought the upgrade for the front, I cannot review them as they are not fitted but Hope to do this before spring 2022, the order was fulfilled quickly and arrived with me days later, excellent so far and hope to update my review once tested.