Wilwood GT 15-Inch Front Brake and Hub Assembly with Red AERO6 Calipers, Specified Factory GM or Ridetech Pin Spindles

The red GT version combines AERO6 service calipers, BP-20 pads and curved-vane 15-inch rotor assemblies. Hubs are included, but fit depends on the actual original GM or replacement Ridetech pin spindle listed for each application, rather than a broad model-year claim. Founded in 1977 by Bill Wood, Wilwood Engineering is now based in Camarillo, California, where its work centers on disc brake systems and components. Calipers, brake rotors, master cylinders, valves, fittings and brake lines serve motorsport, street-performance and specialized installations; selecting these parts requires considering the complete braking system.

Technical Details

• Manufacturer part number — 140-15053-R.
• Rotor mounting hat — aluminum; Black E-Coat; hat offset 1.750 in.
• Nominal minimum wheel diameter — 19 in; 482.6 mm; verify full spoke and barrel clearance using the kit drawing.
• Wheel-stud thread — 1/2-20.
• Wheel bolt circle — 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 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.
• Rotor dimensions — outside diameter 15.00 in; 381 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.
• Hydraulic package contents — brake lines included: No; master cylinder included: No; booster included: No.
• Mechanical package contents — separate hubs included; mounting hardware included: Yes; spindles included: No.
• Stated OE wheel-hub offset — +.38 in; verify the documented spindle and reference geometry.

Fitment & Compatibility

Retain the distinctions between factory disc, factory drum and Ridetech PIN-spindle entries below. The custom Ford/Mercury and early Corvette applications require their stated replacement spindles. Assess original GM spindle machining under DS1101, outward hub offset and 19-inch wheel clearance; choose hoses for the installed chassis.

The application list names Falcon, Comet, Chevy II, Corvette, Skylark, Special, Sportwagon, Chevelle, El Camino, Malibu, Mustang, 442, Cutlass, F85, Vista Cruiser, Acadian, Beaumont, GTO, LeMans, Tempest, Gran Sport, F-100, Camaro, Cutlass Supreme, Firebird, GS 350, GS 400, Nova, Grand Prix, GS, GS 455, Monte Carlo, Sprint, Ventura, Apollo, Omega. 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.

Choose any alternative flexline for the actual route and chassis fittings, with enough travel and the correct flare connections.

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.