Wilwood Rear Superlite 4R Kit for Art Morrison Multilink IRS, Camaro-Based Arrangement, Black Calipers and 14-Inch GT Rotors

This rear kit is selected for the Art Morrison Multilink IRS interface identified by Wilwood, for the documented Camaro-based configuration. Black Superlite 4R calipers work with 14-inch GT-slotted rotor rings and the specified iron mounting hats. The braking components are manufactured by Wilwood Engineering, founded by Bill Wood in 1977 and based in Camarillo, California. The company's design and manufacturing work includes disc brake systems, calipers, rotors, master cylinders, valves, fittings and brake lines. Across motorsport, street-performance and specialized applications, each selected part needs to suit the complete system.

Technical Details

• Manufacturer: Wilwood; manufacturer part number: 140-13648. 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.

• 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.

• Rotor: 14.00 in; 355.6 mm outside diameter; 0.81 in; 20.57 mm thickness. Material: Iron. Construction: Vented. Friction-face style: GT 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: Black. Finish: Black Powder Coat. Inlet thread: 1/8-27 NPT.
• Caliper family: Forged Narrow Superlite 4R. Brake-pad compound: BP-10.

Fitment & Compatibility

Confirm the installed Morrison assembly, its Camaro-based hub/upright components and parking-brake arrangement. DS1046 requires backing-plate/dust-shield and caliper-mount clearance work on the documented installation. Match the actual hardware and check the 18-inch wheel drawing before conversion.

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

Ask PMB Performance for assistance if the installed hardware differs from the documented application. With over 20 years of parts and fitment experience, we can help identify the measurements needed to check the conversion.