Description
21 Big Mo BMP
Rigid v-band ensures a tight
This head has twice the cooling capacity to keep your motor running cooler to maintain horsepower by staying below the 120-degree timing curve
it will not give you any trouble
Pre-2021 Polaris models were equipped from the factory with small clutch rollers that match our dual-cut helix ramp geometry
Bottom Sprocket / 41 Tooth Category_Default Category/SLED/Racing/Polaris 21 Big Mo BMPIf you are looking for some extra top speed, putting this custom smaller bottom sprocket on is a perfect way to do it. Easy bolt on 2 3 MPH