Horsepower is More than FOUR TIMES of stock CRF 50!! This motor is the Biggest that is being currently offered in the. This Motor should fit the following models: Note: This is not a guarantee, if you are unsure, please check with your local dealer. HONDA CRF50 / CRF70 / XR50 / XR70 / Z50 / Z50R /. CT70 Mini… Read more →