This is the Replacement Crankshaft for the O.S. Max .35 & .40 FP Engines. / / FEATURES: Steel construction / / INCLUDES: One crankshaft / / REQUIRES: Assembly into the engine. / / SPECS: Total Length: 80mm (3.15") / Connecting Rod Pin Length: 6.8mm (.27") / Connecting Rod Pin Diameter: 5.3mm (.21") / Crankshaft Bushing Diameter: 12mm (.47") / Length of Threaded Portion: 20mm (.79") / / NNA 12/30/01