CRF's Only Forums

Hi I recently read a bit about putting the Honda TRX piston in your CRF450r and it works as a more durable piston sacrificing tiny amounts of power however after recently trying in my 2009 model the pistons are different sizes-the TRX is taller by a couple mm-anyone one else done this?

The TRX piston you're read about is for the '02-08 CRF450R and the CRF450X. The '09 CRF450R piston is not compatible with the '02-08 CRF450R piston.