The CRF450L / RL Exhaust Coupler allows the installation of any of the FMF slip-on mufflers onto the OEM CRF450 L / RL header.
Keep your factory header and lose the heavy silencer by adding the FMF.
The CRF450L / RL Exhaust Coupler allows the installation of any of the FMF slip-on mufflers onto the OEM CRF450 L / RL header.
Keep your factory header and lose the heavy silencer by adding the FMF.