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The Right Stuff Master Cylinder and Booster Assemblies
Master Cylinder and Booster, 9 in. Booster, Single Diaphragm, 1.125 in. Bore, Gold, Disc/Drum, Buick, Chevy, Pontiac, Oldsmobile, Kit
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Estimated Ship Date: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
G91020971
Part Type:
Product Line:
Summit Racing Part Number:
RSD-G91020971
UPC:
889165098769
Master Cylinder Bore Size:
1.125 in.
Bowl Design:
Dual
Master Cylinder Material:
Iron
Master Cylinder Finish:
Natural
Reservoir Included:
Yes
Reservoir Material:
Iron
Reservoir Color:
Natural
Proportioning Valve Included:
Yes
Master Cylinder Cap Included:
Yes
Brake Booster Type:
Vacuum single diaphragm
Brake Booster Diameter (in.):
9.00 in.
Brake Booster Material:
Stainless steel
Brake Booster Color:
Gold
Brake Pedal Rod Extension Included:
Yes
Mounting Location:
Firewall
Mounting Hardware Included:
Yes
Remanufactured:
No
Quantity:
Sold as a kit.
Notes:
Fits applications with front disc and rear drum brakes.
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.
Applications
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Some parts are not legal for use in California or other states with similar laws / regulations
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