Aftermarket Assassins AA 2022-Up RZR Pro-R 4 Cylinder Custom Cut HelixSKU: 107 1072 Fits ONLY 2022 Up RZR Pro R 4 Cylinder Models Greatly increases rear wheel horsepower transfer based on our custom angle. The OEM helix angle is mild and we found some big gains without losing belt grip. The AA helix has MUCH less roller ratcheting noise when going from load to unload on the driveline. Our roller pocket is smaller and without the EBS notch (don't worry they still have great engine braking, especially in low). This also