Crankshaft Top Performances 39.2mm x 85mmTop Performances High Quality Full Circle Crankshaft with 39,2mm stroke and 85mm connecting rod for 12mm piston pin. Suitable for High end 70cc and Big Bore 77cc Cylinder kit that require 85mm conrod cranksaft (Stage6 R T 70, 2Fast 70cc, Polini Big Evolution 70cc, TPR 77cc). Attention! Small end bearing size is 12x15x15mm. Variator splain have same size as OEM (13mm). One of the unique features characterizing high end crankshafts is the use of
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Top Performances High Quality Full-Circle Crankshaft with 39,2mm stroke and 85mm connecting rod for 12mm piston pin. Suitable for High end 70cc and Big Bore 77cc Cylinder kit that require 85mm conrod cranksaft (Stage6 R/T 70, 2Fast 70cc, Polini Big Evolution 70cc, TPR 77cc...). Attention! Small end bearing size is 12x15x15mm. Variator splain have same size as OEM (13mm). One of the unique features characterizing high-end crankshafts is the use of Tungsten weights instead of standard inserts for balancing.