SSP-G +3.0mm stroker crank manufactured by TTMRC for GY6 engines! Total stroke is 60.8mm. Can be used with A-Case or B-Case engines. Approximate displacement with big bore cylinder kits is as follows:
58.5mm cylinder: 163cc
61mm cylinder: 178cc
63mm cylinder: 189cc
67mm cylinder: 214cc All Sales on Performance Items Final.
