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Top Performances High Quality Full-Circle Crankshaft with 44mm stroke and 85mm connecting rod for 12mm piston pin. Suitable for Big Bore 86cc Cylinder kit. Since it's oversize crankshaft with 44mm stroke, you have to machine the crankcase to allow more space like all Big bore crankshaft with bigger stroke. One of the unique features characterizing high-end crankshafts is the use of Tungsten weights instead of standard inserts for balancing.
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