2012 Honda CRF70F, GOOD TRAIL TIMES! - Sized to Fit Right. Check out our CRF70F. Like all our off-road fun bikes it s built to build confidence, and like the CRF50F it features the same durable engine, three-speed semi-automatic transmission (no clutch to worry about) and smooth power, so it feels right and rides right. And best of all, the CRF70F is built to last, so you and the kids can concentrate on building skills and having fun rather than worrying about repairs.