1mm stroker crank from CY - increases the cc's of your motor. 29mm stroke - 1mm longer than stock 28mm stroke. increasing primary compression. Must use with 2 stacked cylinder gaskets or head kit when using with Chung Yang engines. Forged, heat treated, and ground. Journal diameter same as stock G230RC crank. Fits Zenoah G23LH / G230RC / G260RC. Also fits Chung Yang / CY23RC / CY26RC / CY27RC / GP290 engines.
