Please contact WSRD or include in notes section of your shopping cart the application you will be using this in so WSRD can communicate with STM on all of your needs. 

This is an all billet construction capable of using compression springs with different spring rate options available. There are many helix angles, see menu for available options. We can also provide custom helix angles if you desire for an additional fee. 

Can be used along with the stock primary or the STM primary. Best results are acquired when running both the STM primary and STM tuner together.

Will NOT work with aftermarket seal savers!

Choose a helix angle - The most popular helix is the 40/50ºP. It is a great all-around helix. We found that is worked the best for the average to aggressive trail rider.

Choose a spring - The most popular spring is the KSS12 Blue. This spring works well for most average to aggressive trail or dune riders. 

KEEP IN MIND WE CAN ONLY GET YOU CLOSE WITH SET UP. Everyone's riding style is different so its up to the customer to do the fine tuning!

Build time on STM Clutches that are out of stock is roughly 2-3 weeks.