Reply to "Where to get Porterfield AP63 R4S front pads? Rear pics?"

bosswrenchMember

Only the ones that contact the rear caliper pistons need pins. To unlock the piston from the parking brake linkage so you can push it back for pad replacement etc, the piston is rotated by means of the slot. The off-center pin in the pad keeps the piston from rotating by itself.

6/17/172:47 PM

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