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.

setting up

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

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