Wilwood Rear Superlite 4R/ST Race Brake Kit for Listed Camaro and Cadillac CTS Applications, 14-Inch GT Rotors, Parking Brake Deleted

Four-piston Superlite 4R/ST calipers use Thermlock pistons and BP-35 pads against 14-inch GT rotor rings in this rear race assembly. Dynamic aluminum hats replace the parking-compatible rotor arrangement, and the original drum parking mechanism is removed. 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 — 140-15232.
• Hat wheel-stud clearance diameter — 0.640 in; 16.26 mm.
• Rotor mounting hat — aluminum; Type III Anodize; hat offset 0.550 in.
• Mechanical package contents — no separate hubs included; mounting hardware included: Yes; spindles included: No.
• Flexline specification — Line kit included (manufacturer): None; Rear line-kit reference: 220-11382, 220-13001.
• Parking-brake provision — the original parking brake is eliminated; no mechanical parking function is supplied.
• Rotor dimensions — outside diameter 14.00 in; 355.6 mm; thickness 1.10 in; 27.94 mm.
• Service caliper assembly — Superlite 4R; 4 pistons in each caliper; Thermlock pistons; Forged Aluminium body; Radial mounting.
• Supplied pad compound — BP-35.
• Nominal minimum wheel diameter — 18 in; 457.2 mm; verify full spoke and barrel clearance using the kit drawing.
• Rear flange interface — OEM; axle/flange offset 0.00 in; 0 mm (distinct from rotor-hat offset).
• Hydraulic package contents — brake lines included: No; master cylinder included: No; booster included: No.
• Race pad operating range — BP-35 pads are intended for high-temperature racing; extended low-temperature operation causes premature pad and rotor wear.
• Brake function and supply — Rear road-race brake kit; Disc braking; rear axle; Sold as a kit.
• Rotor construction and friction surface — Spec-37 Iron; Vented; GT Slotted; surface finish: Plain.
• Caliper color, finish and hydraulic inlet — Anodize; Type III Anodize; inlet 1/8-27 NPT.
• Wheel bolt circle — 5 x 4.72 in; 5 x 119.89 mm.

Fitment & Compatibility

Match each CTS or Camaro year, trim and brake code below; newer Camaro entries are conditional, not a blanket generational fit. DS1140 requires minimal OE mounting-tab clearance and hose-bracket modification. The parking brake is eliminated. Select separate year/vehicle-appropriate lines, check 18-inch wheels and reserve BP-35 pads for high-temperature racing to avoid excessive cold wear.

Listed model families are CTS, Camaro; the individual year and brake/spindle conditions remain decisive. Use the fitment table below to confirm year, model, trim and brake or suspension options.

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.