Proflow master cylinders bring a classy look to your GM or street rod. They feature all new components with a wide variety of designs to provide compatibility with manual brakes as well as power-assisted applications. Dual reservoir configurations with several bore diameters accommodate front disc/rear drum brake setups or 4-wheel disc systems.

Whether your building a brake system from scratch, or updating a vintage system, Proflow has what you need in a variety of finishes and lid attachment styles.

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Proflow Master Cylinder, Universal Gm, Flat Top Aluminium, Black, 1.00 in. Bore, Dual Bowl, Ports Both side, Each

Proflow Master Cylinder, Universal Gm, Flat Top Aluminium, Black, 1.00 in. Bore, Dual Bowl, Ports Both side, Each

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Proflow Master Cylinder, GM Original Style 67-77, Cast Iron, Natural, 1-1/8 in. Bore, Dual Bowl, Left Port, GM Original Style 67-77

Proflow Master Cylinder, GM Original Style 67-77, Cast Iron, Natural, 1-1/8 in. Bore, Dual Bowl, Left Port, GM Original Style 67-77

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

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

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Proflow Master Cylinder, GM Universal Cast Iron, Polished, 1.1.25in. Bore, Dual Bowl, Ports both sides, Each

Proflow Master Cylinder, GM Universal Cast Iron, Polished, 1.1.25in. Bore, Dual Bowl, Ports both sides, Each

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