69mm Stroker Crankshaft for GX340 GX390 420cc 440cc Clone

Looking to get more performance out of your racing go kart engine? Do you want that competitive advantage?

This is the only 69mm Crankshaft available for the Honda GX340/GX390 & 420cc Clone Platform.

Recommended for experienced engine builders only! You may need to clearance your block and cam when running a billet connecting rod & custom piston.