Wilwood 12.19-Inch Plain Front Rotor Conversion with Red Four-Piston Calipers for Early Mopar A-Body Disc Spindles

Red four-piston calipers and plain vented rotors form this A-body kit. Hubs are included; select the separate hoses for the actual installation. Bill Wood’s 1977 founding of Wilwood Engineering began a disc brake design and manufacturing business based in Camarillo, California. The range includes master cylinders, calipers, rotors, brake lines, valves and fittings for motorsport, street-performance and specialized vehicles. Component selection must consider the complete braking arrangement.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-15461-R
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• Minimum wheel diameter guidance; verify clearance drawing: 15 in; 381 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: Yes
• Pistons per service caliper: 4
• Service-caliper piston material: Stainless
• Service-caliper mounting: Lug
• Caliper body construction: Forged aluminum
• Caliper Color: Red
• Caliper Finish: Red Powder Coat
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: Dynalite
• Pad compound: BP-10
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: No
• Separately specified hydraulic components: 220-7056; 220-8307
• Rotor Outside Diameter: 12.19 in; 309.63 mm
• Rotor Thickness: 0.81 in; 20.57 mm
• Rotor Material: Iron
• Surface Type: Plain Face
• Rotor construction: Vented
• Bolt Circle Diameter: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm
• Included wheel-stud thread: 1/2-20 thread
• Rotor surface finish: Plain
• Rotor vane / construction reference: 32 V

Fitment & Compatibility

These 12.19 × 0.81-inch front brakes require the documented early Mopar A-body factory disc spindle. The selected years differ by model: Barracuda coverage ends in 1969, while Duster and Scamp start later than Dart/Valiant. DS-1300 states the original five-on-4.50-inch lug-pattern condition; inspect the actual spindle/hub arrangement before ordering. Aluminum hubs, bearings, seals and 1/2-20 studs are included and provide dual 5 × 4.50/4.75-inch wheel patterns. Hoses are separate; select the documented line option for the actual fittings and routing. Any separately installed two-bolt master cylinder may need the required four-bolt mounting adapter, which Wilwood does not supply. Check the wheel drawing even where a 15-inch wheel is nominally allowed.

Listed models: Dart; Barracuda; Valiant; Duster; Scamp. See the supplied table below for each year, submodel and equipment condition.

Wilwood product specifications · Installation instructions

PMB Performance can help identify the required brake component with over 20 years of parts experience. Send the kit details and original-part measurements.

Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.