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, 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 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 70-80 Cast Iron, Natural, 1-1.8 in. Bore, Dual Bowl, Left Port, Each

Proflow Master Cylinder, GM 70-80 Cast Iron, Natural, 1-1.8 in. Bore, Dual Bowl, Left Port, Each

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Proflow Master Cylinder, Ford Falcon/Mustang, Cast Iron, Natural, 1.000 in. Bore, Dual Bowl, Disc/Drum, Each

Proflow Master Cylinder, Ford Falcon/Mustang, Cast Iron, Natural, 1.000 in. Bore, Dual Bowl, Disc/Drum, Each

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Proflow Master Cylinder, Mopar For Chrysler 66-74, Cast Iron, Black, 1-1/8 in. Bore, Dual Bowl, Disc/Drum, Each

Proflow Master Cylinder, Mopar For Chrysler 66-74, Cast Iron, Black, 1-1/8 in. Bore, Dual Bowl, Disc/Drum, Each

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