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
15 Wide, 1″-15 Spline Upper Gear
Yamaha RX-1 HYVO Steel Gear
Polaris HYVO Steel Upper Gear
13 Wide, 1″-15 Spline Upper Gear