'86 FZ600 valve guides

Stock cast iron valve guide on the right, aftermarket bronze guide modified for use in FZ600 on left. Notice the correctly placed clip groove, slightly increased length over stock for increased purchase on valve stem, and added port side taper.

unmodified aftermarket guide vs. stock

cutting valve guide bore reliefs

boring head gasket for oversize pistons

lightened DLC coated wrist pin

big brakes on an FZ600

heavy duty FZ600 case covers

another trick FZ600