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+1mm Stroker (29mm) Crankshaft for CY & Zenoah PUM Watercooled Marine Engines

$49.95
SKU: DD335A

ABOUT THIS PRODUCT:

+1mm Stroker (29mm) Stuffed Crankshaft for CY & Zenoah PUM Watercooled Marine Engines

About

About

+1mm (29mm total) stuffer stroker crankshaft for marine engines. Full-circle crankshaft reduces case volume, increasing primary compression and increasing power.   
Feel the additional power that can only be obtained by increasing the cc's of your engine. This crankshaft features a 29mm total stroke (up from the stock 28mm stroke on Zenoah marine engines).  Fits Zenoah G231PUM/G260PUM/G290PUM/G300PUM etc 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.