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Perhaps someone can advise ;
Got some new pistons for calipers to replace a few pitted ones;
Front 38mm is genuine Porsche & has really smooth anodised finish as per original.
Rear 30mm are retroline reproduction . The black finish is not as smooth as the genuine one , suspect it's not anodising ,but some other coating ?
My concern is that they wont seal properly & also will wear the new bore rubber seals due to slight roughness on piston.
Any opinions ?
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