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Ships within 48 hours · Estimated delivery Sep 3 - Sep 8
unpainted part
Inner Diameter (bell): 105mm
BN157QMJ and most 150cc GY6 clones
A 1000 RPM spring engages the higher gear range sooner than a higher-rated spring
Mazzucchelli Crankshaft; Vespa P/PX oem unpainted partMazzucchelli OEM style 57mm replacement crankshaft for vintage Vespa 125 150cc P PX , Sprint, Sprint Veloce, and Super model scooters. NOTE: If you're putting a cylinder kit on one of these models listed, make sure you get a crank that can stand up to the increased RPMs. Specifications: Stroke: 57mm Connecting rod length: 105mm Connecting rod bearing dimensions: 15mm x 19mm x 20mm Connector pin length: 15mm Cone: 24 25mm Oil seal seat (flywheel side):
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