Each weight in this package is 5.826g heavier than those in our regular Can-Am Maverick X3 clutch kit. By adding heavier weights, the RPM is kept in check while providing optimal primary clamping force against the belt on high horsepower applications. This is essential for drivers using E85 fuel or cranking out massive amounts of horsepower, who need more adjustment. Those who have a stock 2020-2021 Can-Am Maverick X3 RR will need this heavy kit if they've installed an older helix.