Black YX140 140cc Electric Start Semi-Auto (Motor Only) Fork Oil Correct fit for 1973–1978 Z50

Correct fit for 1973–1978 Z50 K3–K8

Durable OEM construction

Large internal flow design for maximum performance

Removable baffle

This XR-style left hand control is a simple

Black YX140 140cc Electric Start Semi-Auto (Motor Only) Fork Oil Correct fit for 1973–1978 Z50MOTOR ONLY, our full kit is now located here: YX140 Full Kit Bundle Arguably the most reliable pit bike engine made. The YX140 140cc Engine fits perfectly in the Honda CT70, Z50, ATC70, SL70, XL70, CRF50 and more. It offers over double the power of the original Honda 70cc engine, the bigger bore stroke brings this 140cc HP up to 13. 5. Enough to cruise at 55 MPH + Photos show this YX140 motor kit installed in our CT70 140cc Engine full Restomod build