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The Right Stuff Master Cylinder and Booster Assemblies B85311872B
Part Number: RSD-B85311872B
The Right Stuff Master Cylinder and Booster Assemblies
Brake Booster/Master Cylinder, Disc /Disc, Black Booster & Master Cylinder Combination Kit, Bottom Mounted Valve
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Estimated Ship Date: Nov 4, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
B85311872B
Part Type:
Product Line:
Summit Racing Part Number:
RSD-B85311872B
Master Cylinder Bore Size:
1.000 in.
Bowl Design:
Dual
Master Cylinder Material:
Aluminum
Master Cylinder Finish:
Black
Reservoir Included:
Yes
Reservoir Material:
Aluminum
Reservoir Color:
Black
Proportioning Valve Included:
Yes
Master Cylinder Cap Included:
Yes
Brake Booster Type:
Vacuum dual diaphragm
Brake Booster Diameter (in.):
8.00 in.
Brake Booster Material:
Steel
Brake Booster Color:
Black
Brake Pedal Rod Extension Included:
Yes
Mounting Location:
Firewall
Mounting Hardware Included:
Yes
Remanufactured:
No
Quantity:
Sold as a kit.
Notes:
Features a bottom mounted valve.
The Right Stuff Master Cylinder and Booster Assemblies
Are you pushing the brake to the floor? That's a clear warning sign that it's time for The Right Stuff master cylinder and booster assemblies. Depending on disc-disc or disc-drum applications, some Right Stuff replacement assemblies include a proportioning valve with a bracket and stainless steel lines. Slowing your vehicle to a safe, efficient stop is much easier with a new master cylinder and booster assembly from The Right Stuff.
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Some parts are not legal for use in California or other states with similar laws / regulations
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