Proflow’s oval-shaped, dual bowl master cylinders are made out of aluminium with 3 3/8” centre-to-centre mounting holes, 9/16” & 1/2” ports on the left side and can be paired with our proportioning valve kits for Disc/Drum & Disc/Disc applications. The lid is a screw-top style with hex screws. These master cylinders are sold individually, or in a kit that includes a proportioning valve. You’ll find the parts you need to get the most out of your factory brakes.

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Proflow Master Cylinder, GM Universal, Cast Iron, Natural, 1.00 in. Bore, Dual Bowl, Left Port, , Each

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