Upgrade from keihin flat cr?

Is there an upgrade from the keihin flat cr for a 2000 wr400f?

Get hold of a complete carb from an '05 or later YZ450.  It's an FCR-MX.  More modern internal circuitry, more reliable, less fussy.  you need to get the hot start assembly with it or the pieces will nickel/dime you up a wall.  Use 450 throttle cable in your throttle grip. "Bolts on".

Awesome thanks!

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