13 In. Brakes Bore: 1.25 In.
Bore: 30.04 mm
11 In. Brakes Bore: 1.125 In. and 1.5781 In.
13 inch Rear Drum JB8
11 inch Rear Drum JB7
11 inch Rear Drum JD7
w/ JB6/JD6 Brake Systems
Browse our selection of quality brake master cylinder parts designed specifically for your Chevrolet R20. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
Cheyenne · Custom Deluxe · Scottsdale · Silverado
Cab & Chassis · Crew Cab Pickup · Standard Cab Pickup
L6 4.8L · V6 4.3L · V8 5.0L · V8 5.7L · V8 6.2L · V8 7.4L
Automatic · Manual
