Description Lightweight aluminum gears are 1/3 the weight of steel gears. This significantly reduces rotating mass freeing up that extra horse power and torque to produce quicker ET’s. These gears will work on the lower shaft of most Arctic, Polaris and Yamaha. To help prolong the life of the gear, we recommend one ounce of Energy Release along with your chain lube. 11 Wide = 1/2″ Width 13 Wide = 5/8″ Width
