Trail Bikes 51mm 6v Stroker 622 Crank for 3 Speed - Honda Z50 (KO-1981) CT70 (69-79)

Trail Bikes 51mm Stroker crank for the 6 Volt Z50's

This kit will increase your displacement from 88cc to 108cc, you'll have more torque and power by replacing your stock crankshaft with this one.
No extra modifications are needed at all.

Please note you MUST run the "vintage" style # FF0225TB oil pump with a 12 Volt modern type piston for proper clearance of the new crank.
(The OEM Honda oil pump shaft has too large outside diameter shaft)
Oil pump Part # FF0225TB has a shaft that has a smaller outside diameter (O.D.) than the OEM for proper clearance of the new crank.

(This crank is for 3 speed Honda Z50 - CT70 6v Motors)
     -1968-79 3 speed Z50
     -1969-79 3 speed CT70

Measures 57mm from timing chain gear to the end of the crankshaft.

If you have any questions please call one of our knowledgeable and friendly techs at 833-327-8507