Wilwood GT 14-Inch Front Brakes with Red SX6R Calipers and Lug-Drive Hats, Specified Corvette/XLR Hubs or Ridetech Hub Spindles

Slotted 14-inch GT rings and red SX6R calipers define this dynamic-mount front package. ProMatrix pads are matched to this GT version, while aluminum lug-drive hats attach the rotors to the documented retained hub system. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications. Its range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines, with each part selected to match the complete brake system.

Technical Details

• Manufacturer part number — 140-15309-R.
• Rotor construction and friction surface — Spec-37 Iron; Vented; GT Slotted; surface finish: Black Electro Coat.
• Caliper color, finish and hydraulic inlet — Red; Red Powder Coat; inlet 1/8-27 NPT.
• 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 — 18 in; 457.2 mm; verify full spoke and barrel clearance using the kit drawing.
• Mechanical package contents — no separate hubs included; mounting hardware included: Yes; spindles included: No.
• Flexline specification — Line kit included (manufacturer): None; Front line-kit reference: 220-8176, 220-9100.
• Rotor dimensions — outside diameter 14.00 in; 355.6 mm; thickness 1.25 in; 31.75 mm.
• Service caliper assembly — SX6R; 6 pistons in each caliper; Stainless pistons; Forged Aluminium body; Radial mounting.
• Supplied pad compound — PM - ProMatrix.
• Hat wheel-stud clearance diameter — 0.520 in; 13.21 mm.
• Rotor mounting hat — aluminum; Type III Anodize; hat offset 0.290 in; dynamic lug drive.
• 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.

Fitment & Compatibility

Confirm the exact year, trim and hub/spindle condition in the applications below. Earlier GM and early Corvette entries require the specified Ridetech HUB spindle, distinct from a PIN spindle. Follow DS1283, verify complete wheel clearance and select separate lines for the actual C5/C6 or custom-chassis connection.

Listed model families are 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; the individual year and brake/spindle conditions remain decisive. 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.