Racing long-stroke crankshaft (44mm stroke). In conjunction with the Big Bore cylinder kits (49.5mm bore) from Top Performances, this releases a whopping 86cc. Only suitable in conjunction with the corresponding cylinder kit from Top Performances. Suitable for Minarelli AM6.
Supplied complete including crankshaft bearings, piston pin bearings and a wedge for the alternator (offset).
Supplied complete including crankshaft bearings, piston pin bearings and a wedge for the alternator (offset).
