There have been trans failures, on the dirt bikes. Simple solution seems to be running extra oil in the trans. It has been discussed here: http://forums.atvconnection.com/mess...did/502653.cfm
Looks like Honda has done some updates: http://www.thumpertalk.com/forum/sho...d.php?t=425538
Looks like Honda has done some updates: http://www.thumpertalk.com/forum/sho...d.php?t=425538
The 04/05 engines were different from the CRF450R (there was no CRF450X at least early on), but the 06/07 engine is virtually identical to the X, so it's owner beware on those. Certainly if you ever do a rebuild, it would make sense to update..........
Anybody know if the 04/05 engine has bushings???
Anybody know if the 04/05 engine has bushings???