Wilwood Rear Black Dynalite Conversion, 12.19-Inch Drilled Rotors for GM 12-Bolt C-Clip-Eliminator Housings — Selected 1964–1974 Applications

Black four-piston Dynalite calipers and MC4 parking calipers are paired with drilled-and-slotted 12.19-inch rotors. The modified GM 12-bolt housing end, C-clip-eliminator bearing assembly and axle offset must match the installation drawing. Camarillo, California is home to Wilwood Engineering, founded by Bill Wood in 1977. Wilwood designs and manufactures disc brake systems, with calipers, brake rotors, master cylinders, fittings, valves and lines serving motorsport, street-performance and specialized uses. Select individual parts to meet the needs of the complete brake system.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-14224-D
• Kit classification: Rear Brake Kits - Street Performance
• Axle position: Rear Kits
• Brake Type: Disc; Parking
• Selling unit: Sold as a kit.
• Rotor Outside Diameter: 12.19 in; 309.63 mm
• Rotor Thickness: 0.81 in; 20.57 mm
• Rotor Material: Iron
• Surface Type: SRP Drilled & Slotted
• 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; 5 X 5 in; 5 X 127 mm
• Catalog stud / mounting-hole reference: 0.520 in; 13.21 mm
• Rotor surface finish: Black Electro Coat
• Hat material: Aluminum
• Hat finish: Black E-Coat
• Hat offset dimension: 2.000 in
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: No
• Minimum wheel guidance (clearance drawing required): 15 in; 381 mm
• Required rear axle / flange: 12 Bolt C-Clip Eliminator
• Catalog axle-offset reference: 2.91 in; 73.91 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: No
• Pistons per service caliper: 4
• Service-caliper piston construction: Stainless
• Service-caliper mount: Lug
• Caliper body construction: Forged aluminum
• Caliper Color: Black
• Caliper Finish: Black Powder Coat
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: Dynalite
• Pad compound: BP-10

Fitment & Compatibility

This is a rear axle conversion for modified GM 12-bolt housing ends using customer-supplied C-clip-eliminator bearing assemblies and a 2.91-inch axle offset. The vehicle table's Ridetech front-spindle descriptions cannot establish rear fitment: check the actual axle-end bolt pattern, bearing stack and 3.06-inch registration ring in DS-1184. MC4 parking cables, cable adapters and hydraulic hoses are separate. Verify the non-staggered layout and conditional 15-inch wheel clearance.

Listed models: Chevelle; 442; Beaumont; Camaro; Apollo. Use the fitment table below for the individual years, submodels and equipment conditions.

Wilwood product specifications · Installation instructions · Technical bulletin

For fitment assistance backed by more than 20 years of experience, share the installed brake configuration with PMB Performance before ordering.