STM Powersports RZR Pro R Primary Billet Clutch
All new design for the New 4 Cylinder Engines
The design is similar to our HD clutches from other machines that offer a spread cam arm pin diameter. This allows for more leverage through the cam arms.
This clutch also incorporates a lager diameter 2 way bearing design for longer lifespan through use and smoother take off.
Must select a weight and spring kit.
Combined with our Pandemyk Performance Stage 2 Tune we have seen top end speeds 118+ MPH with both STM primary and secondary together.