Wilwood Drilled Rear Brake Conversion for Camaro-Based Art Morrison Multilink IRS, Black Superlite Calipers and 14-Inch Iron Rotors

Drilled-and-slotted 14-inch rotor rings replace the GT rings in this black-caliper Morrison IRS configuration. The kit combines four-piston Superlite calipers, parking-style iron hats, BP-10 pads and mounting hardware; hydraulic hoses and the suspension assembly are separate. Wilwood Engineering was founded in 1977 by Bill Wood and is based in Camarillo, California. It designs and manufactures disc brake systems and components serving motorsport, street-performance and specialized applications. The range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines; their individual specifications must be matched to the complete brake system.

Technical Details

• 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.

• 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.

• 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.

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

Fitment & Compatibility

Select by the exact Art Morrison Multilink IRS and installed hub/upright dimensions, not Camaro model year alone. Review DS1046 for backing-plate, dust-shield and caliper-tab modifications, and confirm the parking system and wheel envelope on the actual assembly.

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

Supply the vehicle details and current brake configuration when contacting PMB Performance for fitment help. Our team brings over 20 years of parts experience to checking the combination.