Wilwood Red D154 Rear Brakes with Drilled 12.19-Inch Rotors for GM 12-Bolt Flanges and Internal Parking Shoes

Red floating D154 calipers and drilled rotors form this rear conversion. Verify GM 12-bolt offset, register and forward caliper clearance. Bill Wood founded Wilwood Engineering in 1977, and the manufacturer is based in Camarillo, California. Wilwood designs and manufactures disc brake systems alongside calipers, master cylinders, rotors, fittings, brake lines and valves. The motorsport, street-performance and specialized ranges depend on components selected to work within a complete braking system.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-15641-DR
• Kit classification: Rear Brake Kits - Street Performance
• Axle position: Rear Kits
• Brake Type: Disc; Parking
• Selling unit: Sold as a kit.
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: No
• Minimum wheel diameter guidance; verify clearance drawing: 16 in; 406.4 mm
• Required spindle / rear housing interface: 12 Bolt
• Required axle-flange offset: 2.75 in; 69.85 mm; 2.81 in; 71.37 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: No separate wheel hubs; one-piece rotor-and-parking-hat units included
• 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
• Rotor-hat mounting-hole clearance diameter (not stud thread): 0.52 in; 13.21 mm
• Rotor surface finish: Black Electro Coat
• Rotor vane / construction reference: 32 V
• Pistons per service caliper: 2
• Service-caliper piston material: Stainless
• Service-caliper mounting: Floating
• Caliper body construction: Forged aluminum
• Caliper Color: Red
• Caliper Finish: Red Powder Coat
• Caliper Inlet Port Diameter: M10 x 1.50
• Caliper family: D154
• Pad compound: BP-10

Fitment & Compatibility

Red floating D154 calipers with two stainless pistons operate the drilled-and-slotted 12.19 × 0.81-inch rear rotors. Required axle geometry is the documented GM 12-bolt flange at either 2.75 or 2.81 inches of axle-flange offset, with calipers positioned ahead of the axle. These are two specified dimensions rather than a continuous adjustment range. Inspect the actual rear housing and C-clip axle-retention arrangement against DS-1320. The vehicle table’s Ridetech front-spindle conditions cannot establish rear compatibility. Confirm the actual rear measurements before relying on those vehicle assignments. Included parking shoes work inside the iron rotor hats; cables, clevises, adapters and hoses are extra. Use a D154-compatible M10 × 1.50 banjo connection with the correct line route, not an assumed direct NPT connection. Check the 3.06-inch rotor register, supplied 2.80-inch ring, flange diameter/chamfer and shock/cable clearance. Sixteen inches is the standard wheel guidance; any smaller wheel requires a drawing check.

Listed models: Chevelle; 442; Beaumont; Camaro; Apollo. See the supplied table below for each year, submodel and equipment condition.

Wilwood product specifications · Installation instructions · Technical bulletin

Ask PMB Performance for help comparing the installation requirements. We have more than 20 years of experience working with brake parts and fitment.

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