CNS Boost ** Updated** Helix and Primary Spring.

We have been working a lot with the Polaris Boost to get the absolute best bottom end throttle response.

Through a lot of R&D and testing we have came out with a new custom helix in conjunction with our same weight and spring combination, so if you already have our clutch kit all you will need is this helix and primary spring. Secondary Spring and weights are the same.

The bottom end is extremely aggressive and and responsive if you are looking for 9r bottom end and boost top end this is what you want.

All new clutch kit purchases will come with the updated helix.