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


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 or Thruxton 1200, please watch this video:


Customer Reviews

Based on 42 reviews
Paul Wright
Springs & Thing's

1st class delivery again, I haven't had time to fit this kit yet due to repair work to my speed twin . The quality of the adjustable folk tops and springs look great but the plastic spaces are disappointing pieces of pipe roughly cut. But I'm sure they will make an improvement in the handling

Christopher La Roche
Progressive springs and adjusters

Excellent product good delivery

Phil Langston

The order was not completed. There was no fork upgrade kit to fit my bike.
Thanks as always. Phil

Alan Smith
Triumph Bonneville fork springs.

Very pleased with these, really improved the front fork action and smoothed out the harshness of the bumps over the standard springs.
Still fine tuning with the pre load adjusters which are of high quality and look great!!
Definitely a worthwhile improvement.

Mike B.
Progressive Fork Springs and Preload Caps

I installed these last night on my 2022 Gold Line Street Twin. Installation was very easy and straight forward, many thanks for Delboy's video. Noticed an improvement right away. I will be experimenting with the preload adjustment. Tec makes great products for our bikes. I am in the USA and can't say enough good things about the customer support. Fast shipping, they always answer my emails quickly and great products for great prices. Thank you TEC