The Stage6 HPC crank is fully circular, ensuring a higher primary compression. The quality is very high as it is made of heavy duty steel and without plastic fillings, which adds to the overall weight of the crank. The crank is balanced to 16,000 rpm. The crank is supplied incl. needle bearing.
NOTE: For Derbi GPR, this gear must be used to fit it - Gears on crankshaft for clutch