Seller notes

you are bidding on head mods for your HONDA mx-atv 4-stroke head.This includes installing copper-alloy ampco 45 valve guides that are honed to perfect tolerances and then copper-alloy ampco 45 seats are installed and cut on our serdi center for maximum flow at all lift hieghts.and then porting of the intake and exhaust runners with the proper size and finish. head surface lapping and assemble.these seat and guide mods are the best for all out race motors and non race users looking for the ultima...

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