About
About
Stuffed 28mm stroke crankshaft for marine engines. Full-circle crankshaft with stuffing reduces case volume, increasing primary compression and increasing power. This crankshaft comes stock on Chung Yang (also known as CY or "Sikk") watercooled motors. Also fits Zenoah G231PUM and G260PUM with minor crankcase modification - you will need to slightly carve out the cases under the crankshaft flyweights to allow for proper clearance. Installing this crankshaft has a significant performance gain for the Zenoah engines.