I have both bikes and havent drag raced them yet!! Both run 14/46 gearing. On a terminal velocity which would win? I think the CRF would get the jump and possibly midrange because of that smashing mid hit but would the XR keep up at the end? (the XR is highly modded - HRC engine, massive oil cooler and big pipe with a flowed head. CRF is stock. Both bikes as new) I think my 628 has about 55HP http://i2.photobucket.com/albums/y39/torbreck1/133_3301.jpg Having ridden both lately I think the CRF might have the CR but surely not? Interested in anyone who has done this.