FMF Silencer gasket WR426


Iv got a Yamaha WR426, and need a gasket / joint to fit a FMF Q silencer to the (i assume) original header pipe.

Does anybody know where i can buy one of these?



There is no gasket at this joint. it is a slip fit with a rather robust clamp. after proper test fitting I suggest a thin skin of Hi-Temp silicone applied to the male portion of the header pipe. after assemble and clamp tightening, clean residue from the joint. Allow to dry overnight before starting engine.

Ok maybe i used the wrong word. My header pipe is about 40mm diameter and the diameter of the silencer female connection is about 45-50mm. It needs a sort of sleeve to make up the difference in diameters and seal the joint. I thought there maybe a standard part that you can buy for doing this job.

The ones for 426's I have ever seen are a slip fit like stated before. The newer wr's 07+ have a smaller head pipe that requires a spacer that comes with the silencer. Are you sure it is the correct part #? If it is correct you may need to try the OEM style gasket for the stock silencer.

Ok cheers lads, think il order the OEM part today and see if that works

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now