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If you are looking for the best in Continuous Variable Transmission Clutch, check out the Mini bike Magnum 44C Series Drive Clutches stocked by OMB Warehouse. The 44C Magnum continuously variable transmission (CVT) clutch from Comet Clutches is a torque sensitive drive system device that is infinitely variable from engagement to the highest speeds attainable (within the pitch diameter range). This Symmetrical clutch is designed to withstand the extreme rigors of rough applications. By changing pucks and spring, the Mini bike Magnum 44C Series Drive Clutches can be converted from the standard 4 cycle setup to be used on 2 cycle engines. Recommended HP minimum 8 up to 18 HP for 4 cycle engines, Specifications: Drive belt 7/8 in. top width, symmetrical type, OEM modifications possible to alter belt widths, Drive clutch bore sizes: 0.75 in., 1 in., 1-1/8 in. Also check out the 44D version in our inventory. The driven bore sizes: 5/8 in., 0.75 in., 7/8 in and driven bore sizes: 5/8 in., 0.75 in. The Speed reduction ratios using 40D, 7.5 in. diameter - 2.43:1 low, 1:1 high and with the 8.5 in. diameter - 2.83:1 low, 1.24:1 high. Applications are for go-=karts, mini bikes, and other small engines.