Topend Pro 150cc GY6 performance Transmission kit
This gearing Kit is designed to give you the most top-end without losing much off the line acceleration. Compared to most stock set-ups you should gain 5 to 8 MPH, giving top-ends over 60mph. This may vary with riders weight, terrain and other common variables. This kit works on standard 125-150cc GY6 engine, has best performance on the longcase 12-13 inch wheel models.
This kit includes:
