Wilwood Black Six-Piston Front Conversion with Drilled 15-Inch Rotors, Hats and Hubs for Listed GM / Ridetech Pin-Spindle Layouts

The drilled configuration supplies SRP Spec-37 rings, aluminum hats and dual-pattern front hubs, operated by black AERO6 calipers with BP-10 pads. Original GM suspension and custom Ridetech pin-spindle entries have distinct installation conditions that must be matched individually. Wilwood Engineering is based in Camarillo, California; Bill Wood founded the company in 1977. Disc brake system design and manufacturing includes calipers, rotors, master cylinders, pressure valves, fittings and brake lines for motorsport, street-performance and specialized applications. Component selection must account for how the complete brake system mounts, operates and balances.

Technical Details

• Manufacturer part number: 140-15053-D.
• 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): None; Front line-kit reference: 220-7056.
• Rotor dimensions: outside diameter 15.00 in; 381 mm; thickness 1.25 in; 31.75 mm.
• Service caliper assembly: AERO6; 6 pistons in each caliper; Stainless pistons; Forged Aluminium body; Radial mounting.
• Supplied pad compound: BP-10.
• Wheel bolt circle: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm.
• Nominal minimum wheel diameter: 19 in; 482.6 mm; verify full spoke and barrel clearance using the kit drawing.
• Stated OE wheel-hub offset: +.38 in; verify the documented spindle and reference geometry.
• Hydraulic package contents: brake lines included: No; master cylinder included: No; booster included: No.
• 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; SRP Drilled & Slotted; surface finish: Black Electro Coat.
• Caliper color, finish and hydraulic inlet: Black; Black Powder Coat; inlet 1/8-27 NPT.

Fitment & Compatibility

Use the application details to separate factory drum/disc spindles from Ridetech PIN-spindle conversions. Ford, Mercury and early Corvette model entries do not confer stock-spindle fit. Have the applicable DS1101 anchor/steering-arm machining completed by a qualified shop; account for wheel position, minimum wheel envelope and separate brake hoses.

Check the application-specific restrictions for 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. 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.

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.