Ford X.Flow 77.60mm stroke EN40B steel ultra lightweight hollow main bearing crankshaft semi counter weighted. Comes with 40mm diameter hollow big ends with twin oil feed to ends. 12 bolt tail with X.Flow nose. Suitable for Classic Hotrods and similar where ultimate engine response is required. Weight approx 9.3kg Not suitable for Rally/ Endurance use. Any length Conrod set with bearings available please ask.