7/8” Wide HYVO gears are built solely for use on the jackshaft. Use the narrower 3/4”-Wide HYVO on the bottom. .780” Wide
Ski-Doo HYVO Conversion Gear, Lower
15 Wide, 7/8″-13 Spline Upper Gear
Yamaha Lower HYVO Steel Gear
Polaris HYVO Steel Upper Gear