Cutting '86 FZ600 guide bore reliefs
The port side ends of the standard guide bores terminate at an angle to their axis. Cutting reliefs even with the short sides of the bores prevents the guides from being pushed off center.
modified aftermarket bronze valve guide
boring head gasket for oversize pistons
lightened DLC coated wrist pin
big brakes on an FZ600
heavy duty FZ600 case covers
another trick FZ600