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Product details
GT slotted 15-inch discs and red SX6R calipers identify this Roadster Shop front system. The 72-vane Spec-37 rotors attach through dynamic lug-drive hats, with BP-10 pads and the retaining hardware included for the prescribed mounting arrangement. 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: 140-18368-R
- 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
This SX6R configuration requires the Roadster Shop Mustang II upright and the five-on-4.75-inch hub application described in DS-1703. Confirm the precise hub and hat dimensions before ordering; the original vehicle's model year does not identify this custom assembly. The 15-inch rotors attach through dynamic drive lugs and wear clips, secured by a retaining ring. Follow the guide's snap-ring engagement checks and the prescribed steering-arm bracket location. Retain compatible hubs and supply spindles and flexlines separately. Check wheel clearance for the rotor, large caliper body and hose routing. Nominal minimum wheel diameter: 19 in; 482.6 mm. The linked wheel-clearance diagram must confirm barrel and spoke clearance; wheel diameter alone does not guarantee fit.
Rotors and mounting dimensions
- Rotors: 15.00 in; 381 mm diameter x 1.25 in; 31.75 mm thick; vented Spec-37 Iron
- Friction faces: GT Slotted
- Rotor coating/finish: Black Electro Coat
- Internal vanes: 72 curved
- Hats: Aluminum; Type III Anodize; 0.868-inch hat offset
Calipers and pads
- Calipers: SX6R; 6 pistons
- Caliper finish: Red 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: 1.75 / 1.38 / 1.38 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.
