These steel silent gears are several times stronger than OEM’s. They can be used on any shaft that is 1”-15 spline, but are most common in the 1996-present Polaris and all Yamaha’s up until the RX-1.
11 Wide = 1/2″ Wide
13 Wide = 5/8″ Wide
15 Wide = 3/4″ Wide
13 Wide, 7/8″-13 Spline Upper Gear
15 Wide, 27mm-17 Spline, Steel Lower Gear
13 Wide, 27mm-17 Spline, Steel Lower Gear
Polaris HYVO Steel Upper Gear