[kayesport]

Good afternoon

I'm just trying to find out if the gearbox ratios on a crf 450 r the same as the 450 X can I use the same clusters

Are the ratios the same?

thanks

[JimDirt]

No the physical size of the parts are different and will not fit as the X case is wider than the R

This is your ONLY option
http://www.crfsonly.com/catalog/product ... ts_id/3699

[Aussiecrf230]

Either that or buy a X and change out head, cam etc.
Also have button start unless you what to get rid of that too.

[crfsonly]

the information you've been provided is correct. honda makes trans changes among models/model years making them incompatible. it would have been a great design choice to make the R and X transmissions interchangeable. the '02-08 450R trans is not even compatible with the '09+ 450R trans. as mentioned we do have a wide ratio trans for the '02-08 450R. it's rock solid and shifts better than the stock trans.

ken