8" Springs work in many applications

Can be used along with the stock primary or the STM primary

Awesome sound

Fits all 2009-16 Arctic Cat 1100 Turbo models

custom springs

Cam Gears Adjustable / ProR Category_Default Category/SLED/Arctic Cat/9000 (998cc Triple) '17-Up 8" Springs work in manyBC8877 NEW Polaris Pro R Adjustable Cam Gears Intake & Exhaust Gears are machined from hardened steel alloy with an aluminum, gold anodized center section for adjustability, fully compatible with the stock Polaris timing chain. The BC adjustable cam gears for the Polaris Pro R platform are the perfect way to gain top end or low end torque depending on how you dial in the gear settings. These gears allow for 5 degrees of advance or retard for both