Wilwood Black Front SRP Brake & Hub Kit, Chevrolet Bel Air/Nomad/One-Fifty Series/Sedan Delivery/Two-Ten Series/Del Ray (1955–1957), 12.88-Inch Rotors

Drilled/slotted Spec-37 rotors and black six-piston calipers distinguish this Wilwood front hub conversion for the specified Chevrolet drop spindles. The 12.88-inch rings use 48 curved vanes and separate hats, while the supplied hubs provide the wheel mounting. Verify the spindle choice before ordering; the application depends on installed suspension hardware rather than model year alone. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings, and brake lines for motorsport, street-performance, and specialized applications.

Technical Details

• Manufacturer part number: 140-12307-D
• Type: Forged Narrow Superlite 6R Big Brake Front Brake Kit (Hub)
• Calipers: Forged Narrow Superlite 6R; 6 pistons per caliper; Black Powder Coat.
• Caliper bore sizes: 1.62, 1.12, 1.12 inches. Piston type: Stainless.
• Included pad compound: BP-10.
• Rotors: 12.88-inch diameter × 1.10-inch thickness; SRP Drilled & Slotted; Spec-37 Iron; Black Electro Coat surface; 48 curved vanes.
• Replacement hubs: Hub - Hat Mount; Aluminum; Bare.
• Wheel bolt circles: 5 x 4.50; 5 x 4.75 inches.
• Included: paired calipers, pads, rotors, mounting brackets and assembly hardware, replacement hubs, rotor hats.
• Hydraulic lines and fittings selected separately. No master cylinder, booster or spindles are supplied.
• Conditional wheel screening size: 17 inches. Use the installation clearance diagram to verify the actual barrel and spoke profile.

Fitment & Compatibility

DS876 details the Heidts Tri-5 arrangement, with application rows identifying additional listed spindle options. The kit does not fit original 1955–1957 Chevrolet spindles. Check the hub pattern and the actual 17-inch-or-larger wheel profile, including spoke offset around the radial caliper. Hydraulic lines are selected separately, and bearing condition, stud engagement and master-cylinder suitability must be assessed as part of the complete installation.

Match the individual model, year, submodel and brake configuration in the fitment table below.

Wilwood installation documents: Installation instructions.

PMB Performance has over 20 years of brake-system experience. Contact us with your vehicle details and installed brake hardware for help confirming the correct arrangement.

California Proposition 65 warning, brake pads only: WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.