Wilwood Drilled 12.19-Inch Front Disc Package with Black Superlite Calipers, C10 Aluminum Modular Pro Drop Spindle Applications Only

The SRP variant supplies drilled-and-slotted iron rotor rings with aluminum hats and black six-piston Superlite calipers. It is a brake-only package for the documented modular C10 spindle system, with BP-10 pads and mounting parts included. Bill Wood founded Wilwood Engineering in 1977. Based in Camarillo, California, the company designs and manufactures disc braking systems and components for street-performance, motorsport and specialized use. Its calipers, rotors, master cylinders, valves, fittings and brake lines are chosen around the hydraulic, mounting and balance needs of a complete system.

Technical Details

• Manufacturer part number: 140-15302-D.
• Mechanical package contents: no separate hubs included; mounting hardware included: Yes; spindles included: No.
• Hydraulic package contents: brake lines included: No; master cylinder included: No; booster included: No.
• Flexline specification: Line kit included (manufacturer): None; Front line-kit reference: 220-7056, 220-11237, 220-12168.
• Brake function and supply: Front Brake Kits - Street Performance; Disc braking; front axle; Sold as a kit.
• Rotor dimensions: outside diameter 12.19 in; 309.63 mm; thickness 1.10 in; 27.94 mm.
• Rotor construction and friction surface: Iron; Vented; SRP Drilled & Slotted; surface finish: Black Electro Coat.
• Service caliper assembly: Superlite 6R; 6 pistons in each caliper; Stainless pistons; Forged Aluminium body; Radial mounting.
• Caliper color, finish and hydraulic inlet: Black; Black Powder Coat; inlet 1/8-27 NPT.
• Supplied pad compound: BP-10.
• Wheel bolt circle: 5 X 4.75 in; 5 X 120.65 mm; 5 X 5 in; 5 X 127 mm.
• Hat wheel-stud clearance diameter: 0.520 in; 13.21 mm.
• Nominal minimum wheel diameter: 15 in; 381 mm; verify full spoke and barrel clearance using the kit drawing.
• Rotor mounting hat: aluminum; Black E-Coat; hat offset 1.530 in.

Fitment & Compatibility

Match the exact Chevy/GMC model and year, then confirm the separately purchased Wilwood Aluminum Modular Pro Drop spindle/hub assembly. DS1158 does not cover original OE spindles. Check +0.41-inch outward versus -0.06-inch inward wheel position for the appropriate year group, full 15-inch clearance and separately selected hoses.

Models represented in the detailed applications: 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. Each is subject to its individual year, trim and brake/suspension condition. 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.

PMB Performance has over 20 years of experience with parts and fitment details. Contact us with the original vehicle specification and any changes to its braking or suspension system.

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.