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High Speed Inner Rotor kit for 50cc 125cc Dirt Bike Pit Bike CRF50 CRF 70 XR50 Z SDG SSR COOLSTER - RedCap, STTR-0023
RedCap STTR-0023
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UPC
600170690676
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Outside Diameter: 115mm Bolt Hole Spacing: 101mm Inside Diameter: 18mm XR50, CRF50, XR70, Pitbike and Mini ATV Engines: XR/CRF 50, 70, Z 50, BBR, Thumpstar, SSR, Sikk MX. most Chinese made and most Horizontal kick start engines, will not work on electric start engines. This product is a built-in magnetic rotor structure. It can get rid of the weight of flying wheel magnetic rotor so the engine becomes light and speedy. The engine can run freely and well from idling to high speed of 1,5000 RPM. This product can be used for various engines of racing bikes. It works better in all stock or high performance motors because the motor can rev free with not as much weight on the crankshaft
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