My Pro Circuit silencer?

[EX400rider]

On my CR85 will i need to rejet if i have Pro circuit silencer on my stock pipe? Thats with stock pipe so should it be that big of deal.

you dont have to but it would be better if you did

[TRXRacer1]

It would be foolish to not atleast do some simple plug chops and see. I'm sure you have 5 min to check.

[TwentyBelow131]

You will probably have to bump up the main jet. Just do a plug chop to make sure.

dont waste your money on a silencer save for a pipe, a p-c silencer w/ a stock pipe wont do anything, just make it louder