Wilwood Rear Red Superlite 4R Conversion for Corvette C5/C6 (1997–2013) and XLR (2004–2009) — 14-Inch SRP Rotors for the Original Parking Brake

Red Superlite calipers and drilled/slotted Spec-37 rotors identify this Corvette/XLR rear package. The 14-inch assembly retains the original parking brake and hub arrangement, so wheel spacing and serviceability of the reused parts require inspection. Wilwood Engineering designs and manufactures the disc brake systems and components used throughout its motorsport, street-performance and specialized product range. Bill Wood established Wilwood in 1977, and the company is based in Camarillo, California. Its calipers, brake rotors, valves, master cylinders, brake lines and fittings are selected according to the demands of the whole brake installation.

Technical Details

• Manufacturer part number: 140-9119-DR
• Included pad compound: BP-10; pistons: stainless steel
• Caliper body: Forged aluminum; hydraulic inlet: 1/8-27 NPT
• Rotor surface finish: Black Electro Coat; rotors are not supplied burnished
• Rotor/hat wheel-stud clearance pattern(s): 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm; the existing hub/axle pattern is retained
• Hat/rotor stud-hole clearance: 0.520 in; 13.21 mm; this is not a wheel-stud thread designation
• Parking brake: retain the original internal parking-brake mechanism; no replacement cable kit is supplied
• Hydraulic hoses: not included; match the separate lines and fittings to the application
• Kit includes calipers, rotors and mounting hardware; replacement hubs and spindles are not included
• Not included: master cylinder and brake booster
• Wheel clearance: 18-inch wheels may fit; check the complete manufacturer caliper/rotor template
• Quantity: sold as one axle kit
• Service calipers: 4-piston Forged Narrow Superlite 4R; Red Powder Coat; radial mounting
• Brake rotors: 14.00 x 1.10 inches; Spec-37 Iron; SRP Drilled & Slotted; vented

Fitment & Compatibility

For the listed 1997–2013 Corvette C5/C6 and 2004–2009 Cadillac XLR rear applications. The rotor hats work with the existing internal parking brake, which is retained and adjusted to factory specifications. Verify the precise brake package, hub and wheel arrangement.

The application notes call for 1/8-inch spacers with OE rear wheels. Check the DS516 template, wheel seating and stud engagement for the actual wheel. Rear hydraulic lines are separate; choose the correct model-specific connection rather than treating a front hose reference as a rear component.

The table below gives the detailed vehicle coverage; match the individual entry and each referenced note.

Manufacturer Resources

• Wilwood kit specifications and wheel-clearance information
• Installation instructions and component list

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.

For fitment help, contact PMB Performance with your VIN and details of any axle, spindle or brake changes. Our team has over 20 years of experience checking parts and fitment, including the dimensions that a model-year search cannot establish.

Vehicle Applications

Application Notes

1. 14" Rotor
2. Kit will require aftermarket wheel spacers of 1/8th" (not included in kit) for rear kit installation with OE wheels.
3. Line kit included (manufacturer): None
4. Rear line-kit reference: 220-8177, 220-9101