Crankshaft, 72mm Honda GX390 stroker crankshaft for Go Kart Racing

72mm Stroker Crankshaft Producing up to 479cc - GX390 & 420 Predator
This is a Chinese OHV core that fits Honda GX340, GX390, or any of the 420, 440, & 460cc Chinese OHVs. Gear for balance shaft and bearing included!

438cc with 88mm Bore (GX390)
458cc with 90mm Bore (420 Predator)
479cc with 92mm Bore

*Warning: Piston may need to be cut approximately .060" when using genuine Honda blocks and pistons. Clearance may be required. This is not a bolt-in part, but is for experienced engine builders.