Home   All Parts   Engine Parts & Diagrams, Scooters-ATVs-Dirt Bikes-GoKarts   Crankshafts, 2 Stroke and 4 Stroke, For 49-260cc Engines   Crankshaft , Thread OD Spline Side=12mm, Taper Side=14 , Length=312 Splines=22 , Bearing OD=68 Pin ID=15.8