Fitment questions?
Call (855) 786-7101 or text (801) 304-3141.
Real people. Real answers.
Product details
Black FNSL6R calipers clamp the 12.88-inch SRP discs in this Roadster Shop front kit. The drilled/slotted rotors retain 48 curved internal vanes, and the hats mount on the existing hubs using the supplied registration adapters. Bill Wood established Wilwood Engineering in 1977. From Camarillo, California, the company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines, for motorsport, street-performance and specialized applications.
Technical Details
Kit contents and separate parts
- Manufacturer part number: 140-18366-D
- Supply: one brake kit; components for both sides of the axle
- Mounting hardware: included
- Hubs: not included
- Spindles, master cylinder and brake booster: not included
- Brake flexlines: not included
Fitment & Compatibility
The Superlite front brackets are made for the Roadster Shop Mustang II spindle/upright with the specified five-on-4.75-inch hub. Check that hardware first, then compare the 12.88-inch rotor and radial caliper envelope with the wheels. This application depends on the Roadster Shop components rather than an original Mustang model year. Follow the guide's steering-arm bracket orientation, rotor registration and shim procedure. Compatible hubs stay on the vehicle, and neither replacement hubs nor spindles are included. Hydraulic flexlines must be selected separately for the installed suspension. Nominal minimum wheel diameter: 17 in; 431.8 mm. The linked wheel-clearance diagram must confirm barrel and spoke clearance; wheel diameter alone does not guarantee fit.
Rotors and mounting dimensions
- Rotors: 12.88 in; 327.15 mm diameter x 1.10 in; 27.94 mm thick; vented Spec-37 Iron
- Friction faces: SRP Drilled & Slotted
- Rotor coating/finish: Black Electro Coat
- Internal vanes: 48 curved
- Hats: Aluminum; Black E-Coat; 1.500-inch hat offset
- Rotor/hat wheel-stud clearance patterns: 5 X 4.5 in; 5 X 114.3 mm; 5 X 4.75 in; 5 X 120.65 mm
Calipers and pads
- Calipers: FNSL6R; 6 pistons
- Caliper finish: Black Powder Coat
- Body construction: Forged aluminum
- Pistons: stainless
- Mounting: radial
- Hydraulic inlet: 1/8-27 NPT
- Included pad compound: BP-10
- Listed piston bore sizes: 1.62 / 1.12 / 1.12 in
Installation documents
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.
PMB Performance has supported brake and restoration projects for more than 20 years. Share your vehicle and installed chassis hardware with us for help selecting the correct brake package.
