Wilwood GT-Rotor Front Package with Red Superlite Six-Piston Calipers and Aluminum Hubs, Camaro/Firebird 1982–1992

The red GT version supplies slotted 12.88-inch Spec-37 rings with aluminum hats, hubs and six-piston front calipers. Its BP-10 pads and hose set complete the documented brake package while the original spindle is retained and prepared as required. Wilwood Engineering, established by Bill Wood in 1977 and based today in Camarillo, California, manufactures and designs disc brake systems and their components. The product range covers brake rotors, calipers, valves, master cylinders, brake lines and fittings for motorsport, specialized and street-performance applications. Suitability depends on matching each component to the entire brake system.

Technical Details

• Manufacturer part number: 140-15278-R.
• Rotor dimensions: outside diameter 12.88 in; 327.15 mm; thickness 1.10 in; 27.94 mm.
• Service caliper assembly: Superlite 6R; 6 pistons in each caliper; Stainless pistons; Forged Aluminium body; Radial mounting.
• Supplied pad compound: BP-10.
• Wheel-stud thread: 1/2-20.
• Rotor mounting hat: aluminum; Black E-Coat; hat offset 1.750 in.
• Mechanical package contents: separate hubs included; mounting hardware included: Yes; spindles included: No.
• Flexline specification: Line kit included (manufacturer): 220-6856 (18.00 in); Front line-kit reference: 220-6856.
• Brake function and supply: Front Brake Kits - Street Performance; Disc braking; front axle; Sold as a kit.
• Rotor construction and friction surface: Spec-37 Iron; Vented; GT Slotted; surface finish: Black Electro Coat.
• Caliper color, finish and hydraulic inlet: Red; Red Powder Coat; inlet 1/8-27 NPT.
• Wheel bolt circle: 5 x 4.75 in; 5 x 120.65 mm.
• Nominal minimum wheel diameter: 17 in; 431.8 mm; verify full spoke and barrel clearance using the kit drawing.
• Stated OE wheel-hub offset: +.25 in; verify the documented spindle and reference geometry.
• Hydraulic package contents: brake lines included: Yes; master cylinder included: No; booster included: No.

Fitment & Compatibility

Match the exact Camaro or Firebird and front brake option below. DS1141 differentiates mandatory standard-spindle machining from the unmodified 1LE performance spindle. Check hub position, 5 x 4.75 wheel compatibility and the 17-inch clearance profile before installation.

Check the application-specific restrictions for Camaro, Firebird. A shared model name does not replace the exact year and brake/suspension configuration. Use the fitment table below to confirm year, model, trim and brake or suspension options.

For a fitment check, give PMB Performance the vehicle details and the actual brake and suspension hardware. Our team has over 20 years of experience working through parts compatibility.

Check the Installation instructions for the full assembly and wheel-clearance requirements.

Manufacturer Warning

Applicable to 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.