This kit also includes a 1" bore master cylinder with ball milled top. This complete kit also features the self adjusting proportioning valve and mounting bracket. Valve is setup for Disc Drum applications.
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1955 58 Chevy 8" Dual Power Booster + Smooth Master & Brackets Chrome Disc Drum
Chrome 55-57 Chevy 8" Dual Power Booster + Milled Master Cylinder & Bracket Kit