Dynojet's adjustable Clutch Kit adds versatility and durability to your 2017-2019 Polaris ACE 900.Dynojet Clutch Kits were designed from the ground up. Each kit contains fully adjustable arms with magnetic weights, balanced springs, and a re-designed helix (where applicable). When paired with a Power Vision performance tune, Dynojet’s clutch kits allow for smooth engagement and delivers the power when you need it.All kits are developed on our in-house Dynojet Dyno and field tested to ensure maximum performance in all riding conditions.Engineered to deliver maximum output from Dynojet Power Vision performance tunesEasily adjustable for Sand, Mud, Rock, and Trail applicationsIncreased top speed over stockEfficient power transmission to the wheelsCooler clutch temps yield increased belt life