Features:- 1" bore for strong braking performance
- 4-port master cylinder with 9/16" & 1/2" ports on both sides
- Includes PV2 proportioning valve for proper disc/drum pressure distribution
- Plugs included for unused ports
- Piston adapter allows for manual or power brake applications
- Durable cast iron construction for longevity
- Perfect for GM disc/drum brake conversions!
- Brake Light Warning Switch
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