Wilwood Red Rear Superlite Brake Package for Art Morrison Multilink IRS, Drilled 14-Inch Rotors, Specified Camaro-Based Hubs and Uprights

Red Superlite 4R calipers clamp the drilled-and-slotted 14-inch rotors in this Art Morrison rear package. Its selection depends on the specified Multilink IRS mounting arrangement, including the retained hub, upright and parking-brake interfaces. Bill Wood founded Wilwood Engineering in 1977. Based in Camarillo, California, the company designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications. Its range spans calipers, brake rotors, master cylinders, valves, fittings and brake lines, with each component chosen to suit the complete brake system.

Technical Details

• Wheel interface: 5 X 4.75 in; 5 X 120.65 mm; 5 X 4.72 in; 5 X 119.89 mm; 5 X 4.5 in; 5 X 114.3 mm. Rotor/hat wheel-stud clearance: 0.520 in; 13.21 mm; 0.640 in; 16.26 mm.
• Nominal minimum wheel diameter: 18 in; 457.2 mm. Verify the full wheel-clearance drawing; diameter alone does not establish barrel or spoke clearance.
• Housing/spindle flange: Morrison Multilink IRS. Flange/axle offset: 0.00 in; 0 mm.

• Manufacturer: Wilwood; manufacturer part number: 140-13648-DR. Supplied quantity: Sold as a kit.
• Application category: Rear Brake Kits - Street Performance. Axle/spindle category: Rear Kits. Brake function: Disc.
• Separate wheel hubs included: No. Retain only the hub arrangement specified for this kit.
• Mounting hardware included: Yes. Spindles included: No. Master cylinder included: No. Brake booster included: No.
• Flexible brake lines included: No. Select the vehicle-end connection and routing separately.
• Confirm the existing Camaro-based parking-brake assembly against the specified iron hat; this kit does not establish that new parking shoes or cables are included.

• Rotor: 14.00 in; 355.6 mm outside diameter; 0.81 in; 20.57 mm thickness. Material: Iron. Construction: Vented. Friction-face style: SRP Drilled & Slotted.
• Rotor-hat material: Iron. Hat offset: 0.730 inches; this hat dimension is separate from axle offset.
• Rotor surface finish: Black Electro Coat.

• Calipers: 4 stainless pistons per caliper; radial mounting; forged aluminium bodies. Color: Red. Finish: Red Powder Coat. Inlet thread: 1/8-27 NPT.
• Caliper family: Forged Narrow Superlite 4R. Brake-pad compound: BP-10.

Fitment & Compatibility

Compare the installed suspension and hub registration with the assembly drawing. The backing plate, dust shield and caliper-mount areas may require the work described in DS1046. A Camaro-derived component does not by itself establish compatibility with a stock Camaro rear suspension.

DS1046 specifies trimming the backing plate/dust shield to 13.75 inches diameter and relieving the caliper mounting area; the brake-line bracket hole also needs the illustrated clearance. Follow the complete procedure before assembly.

Manufacturer Documents

• Wilwood product specifications and wheel-clearance drawing
• Installation instructions

PMB Performance can help work through the mounting and wheel-clearance details before purchase. Our parts and fitment support is backed by over 20 years of experience; include measurements of any modified axle or spindle.