STM ATV/UTV Gen 2 Tuner

Description

The New Triple roller option with a 1.25" diameter roller creates a very consistent smooth up shift and back shift with improved roller wear. This latest design creates a huge improvement in engine braking compared to our dual roller tuner. All billet construction capable of using compression springs with different spring rate options. We have many helix angles-see menu above. We can also provide custom helix angles if you desire for an additional fee.

We also offer the option of an encapsulated helix design that keeps the driven from unloading, opening and going into high gear during breaking and jumping which some racers require.

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.