Max Torque Clutch Drum & Sprocket ONLY - 14 Tooth 3/4" #35 Chain - Go Kart PartsKnow your gear ratio! An acceptable gear ratio for a 12T #35 clutch would be a 60T or larger rear sprocket. A 10T #41 clutch would need a 50T or larger rear sprocket. Vehicles with rims larger than 6" or tires with a diameter of 15" or larger should upgrade to a belt drive TAV system. Gear ratios outside of these recommendations voids any warranty!14 Tooth - 3/4" Bore - #35 Chain - 4 CycleWorks with the following Max Torque Clutches:Max Torque SS ClutchMax Torque Box Stock/Clone ClutchThis listing is for a Max Torque Replacement Clutch Drum and Sprocket only! (Full clutch not included)