Wilwood Red Front SRP Brake & Hub Conversion, Cadillac Commercial Chassis/Series 60 Special Fleetwood/Series 60/Series 75 Fleetwood/Series 61/Series 60 Fleetwood/Series 62/DeVille/Series 63/Eldorado/Series 67/Series 75 (1941–1955)

This Wilwood front kit pairs red four-piston Dynalite calipers with 11.75-inch drilled/slotted vented rotors and replacement hubs. It is configured for the specific Cadillac drum-spindle models and years listed in the application table. The selected caliper, rotor and bracket arrangement converts the front brakes while retaining the appropriate original spindle rather than supplying a new axle or spindle package. 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: 140-12649-DR
• Type: Forged Dynalite Pro Series Front Brake Kit
• Calipers: Forged Dynalite Internal; 4 pistons per caliper; Red Powder Coat.
• Caliper bore sizes: 1.75, 1.75 inches. Piston type: Stainless.
• Included pad compound: BP-10.
• Rotors: 11.75-inch diameter × 0.81-inch thickness; SRP Drilled & Slotted; Iron; Black Electro Coat surface; 32 vanes.
• Wheel mounting change from OE: +0.35 inches per side.
• Replacement hubs: Hub - Vented Rotor Offset; Aluminum; Bare.
• Wheel bolt circles: 5 x 5.00 inches.
• Included: paired calipers, pads, rotors, mounting brackets and assembly hardware, replacement hubs.
• Hydraulic lines and fittings selected separately. No master cylinder, booster or spindles are supplied.
• Conditional wheel screening size: 15 inches. Use the installation clearance diagram to verify the actual barrel and spoke profile.
• Wheel-contact support requirement: if the wheel contact surface overhangs the hub face, use the specified 6.60-inch-diameter × 0.20-inch-thick steel spacer between hub and wheel. The spacer is supplied with this kit.
• The wheel-clearance drawing includes the supplied wheel spacer installed; account for its thickness and stud engagement in the completed wheel arrangement.
• For stamped steel wheels whose contact area does not overhang the hub, Wilwood recommends the separate 6.15-inch-diameter × 0.09-inch-thick hub shield to protect the hub face; this is distinct from the required overhang-support spacer.

Fitment & Compatibility

Eldorado and DeVille coverage is 1953–1955, while Series 60 Fleetwood is listed for 1950–1955; check other Cadillac series against their own row instead of extending those dates. DS941 defines the spindle, bearings and bracket arrangement for this red-caliper SRP conversion. Replacement hubs alter wheel position outward 0.35 inches on each side, requiring a tire/fender check as well as the brake-envelope assessment. Use the supplied wheel-support spacer where the mounting contact area overhangs the hub and preserve the spacer dimension shown in the clearance drawing. Hoses are selected separately. Verify secure hose movement through steering lock, suitable master-cylinder displacement and pedal travel, then establish brake balance with the retained rear system.

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.