Need to match the 70cc kit this crank will do it and more.
Tried and true by Malossi Racing Team
MHR
Malossi MHR RHQ 80mm conn-rod for 10mm piston pin for Minarelli
Malossi high compression MHR Racing crank with 39.2mm standard stroke and 80mm standard rod length, designed for 10mm pin. Safe up to 16,000RPM for extreme demands.
Full cheek design for great torque in the upper rev range.
Malossi cranks are a great choice for quality and durability.