Rivera Primo Game Changer Sprocket Kit 1066-0050 Reduces the gear ratio from the stock 1.36 to a stouter, better pulling ratio of 1.44 Kit includes everything you will need to convert your O.E. compensator assembly to one that will enable you to pull better on the straight-away and steep inclines Must be used with the 2011 and later compensator assembly. Earlier models must be upgraded to the newer compensator Includes a 32 tooth comp sprocket, endless primary chain and spacer for the O.E. chain adjuster plus complete instructions