Clutcher brand primary and secondary clutches and primary puller tool for 2015 RZR 900 and 2015 RZR 900-S. Nothing needs to be done to them before being installed! Both come ready to bolt on and ride with spring and weights already in the primary and the spring and helix already in secondary! We’ve spent a good amount of time testing and revising these clutches on my personal RZR 900 before selling these to make sure they have smooth and responsive performance.
The primary in this set is original style and stock tuning besides spring is a upgrade on engagement .It gets rid of choppy/ jerky engagement issues that some years of the oem primary clutch had.