Wilwood Drilled 14-Inch Front Disc Package with Black SX6R Calipers, Verified Corvette/XLR and Ridetech Hub-Spindle Fitments

The black SRP version supplies drilled-and-slotted Spec-37 rings, dynamic lug-drive hats and six-piston SX6R calipers. BP-10 pads are used in this configuration, with existing vehicle or specified Ridetech hub assemblies retained rather than included. Founded by Bill Wood in 1977, Camarillo, California-based Wilwood Engineering designs and manufactures disc brake systems plus their individual components. Its work serves specialized applications, motorsport and street-performance vehicles, with a range of calipers, brake rotors, master cylinders, valves, fittings and brake lines. A compatible complete system governs the selection of each part.

Technical Details

• Manufacturer part number: 140-15309-D.
• 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: 220-8176, 220-9100.
• Brake function and supply: Front Brake Kits - Street Performance; Disc braking; front axle; Sold as a kit.
• Rotor dimensions: outside diameter 14.00 in; 355.6 mm; thickness 1.25 in; 31.75 mm.
• Rotor construction and friction surface: Spec-37 Iron; Vented; SRP Drilled & Slotted; surface finish: Black Electro Coat.
• Service caliper assembly: SX6R; 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 4.5 in; 5 X 114.3 mm; 5 X 4.75 in; 5 X 120.65 mm.
• Hat wheel-stud clearance diameter: 0.520 in; 13.21 mm.
• Nominal minimum wheel diameter: 18 in; 457.2 mm; verify full spoke and barrel clearance using the kit drawing.
• Rotor mounting hat: aluminum; Type III Anodize; hat offset 0.290 in; dynamic lug drive.
• Mechanical package contents: no separate hubs included; mounting hardware included: Yes; spindles included: No.

Fitment & Compatibility

Verify the exact later Corvette or XLR trim/year, or the required Ridetech HUB-spindle installation for earlier GM models. Do not substitute Ridetech pin spindles. Follow DS1283, check the 18-inch wheel profile and choose separate lines appropriate to the actual chassis and fittings.

Models represented in the detailed applications: Chevy II, Corvette, Skylark, Special, Sportwagon, Chevelle, El Camino, 442, Cutlass, F85, Vista Cruiser, Beaumont, GTO, LeMans, Tempest, Gran Sport, Camaro, Cutlass Supreme, Firebird, GS 350, GS 400, Nova, GS, GS 455, Sprint, Ventura, Apollo, Omega, XLR. 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.

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

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.