Wilwood GT Front Brake and Hat Assembly with Red AERO6 Calipers and BP-20 Pads, C10 Wilwood Aluminum Modular Pro Drop Spindles Only

The red GT option uses AERO6 six-piston calipers with slotted 14-inch Spec-37 rotors and BP-20 pads. Its aluminum hats and brake brackets are supplied for the verified C10 modular drop-spindle installation, with no hubs, spindles or hoses in this brake package. Wilwood Engineering has designed and manufactured disc brake systems and components since its founding by Bill Wood in 1977. The company is based in Camarillo, California, and serves motorsport, street-performance and specialized applications. Its calipers, rotors, hydraulic master cylinders, valves, fittings and brake lines need to be matched to the complete system in which they operate.

Technical Details

• Manufacturer part number — 140-15305-R.
• Rotor dimensions — outside diameter 14.00 in; 355.6 mm; thickness 1.25 in; 31.75 mm.
• Brake function and supply — Front Brake Kits - Street Performance; Disc braking; front axle; Sold as a kit.
• Flexline specification — Line kit included (manufacturer): None; Front line-kit reference: 220-7056, 220-11237, 220-12168.
• Hydraulic package contents — brake lines included: No; master cylinder included: No; booster included: No.
• Mechanical package contents — no separate hubs included; mounting hardware included: Yes; spindles included: No.
• Rotor mounting hat — aluminum; Black E-Coat; hat offset 1.380 in.
• Nominal minimum wheel diameter — 18 in; 457.2 mm; verify full spoke and barrel clearance using the kit drawing.
• Hat wheel-stud clearance diameter — 0.520 in; 13.21 mm.
• Wheel bolt circle — 5 x 4.75 in; 5 x 120.65 mm; 5 x 5 in; 5 x 127 mm.
• Supplied pad compound — BP-20.
• Caliper color, finish and hydraulic inlet — Red; Red Powder Coat; inlet 1/8-27 NPT.
• Service caliper assembly — AERO6; 6 pistons in each caliper; Stainless pistons; Forged Aluminium body; Radial mounting.
• Rotor construction and friction surface — Spec-37 Iron; Vented; GT Slotted; surface finish: Black Electro Coat.

Fitment & Compatibility

Use only the listed five-lug Chevy/GMC application with Wilwood Aluminum Modular Pro Drop Spindles. Follow DS1161 for the separate hub/spindle assembly and brake alignment. Compare the correct year-based wheel position and nominal 18-inch clearance drawing, then select appropriate hydraulic lines.

The application list names C10 Panel, C10 Pickup, Suburban, 1000 Series, 1000, C10 Suburban, C15/C1500 Suburban, C1500 Pickup, Blazer, Jimmy, C10, K5 Blazer, C15 Suburban, C1500 Suburban, R10 Pickup, R10 Suburban, R1500 Pickup, R1500 Suburban. Verify the particular year and suspension/brake option for each model. Use the fitment table below to confirm year, model, trim and brake or suspension options.

Select a suitable front hose kit from the listed alternatives after checking the actual chassis fittings, route and full suspension/steering travel.

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.