Stage6 HPC crankshaft for Minarelli AM6 50cc 2-stroke engines.

This crankshaft is to top choice for racing cylinders. The HPC (high primary compression) design is lighter than others with alloy weights used to balance the crank. A high strength conrod with 14mm wide bearing remains stable at extreme engine speeds, perfect for racing cylinders.

The HPC crankshaft has been designed to be used with Streetrace & Big Racing 88cc kits and can be used with other racing and high-end cylinder kits requiring a 45mm stroke crankshaft.

45mm stroke, 90mm conrod, 20mm journals.

Please note: the crankcases will need to be milled to allow for clearance of the conrod. Some AM6 engines used an 85mm conrod, you will need to use a Stage6 cylinder or 5mm cylinder spacer.

Stage6 S6-8018810