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Product details
GT slotted Spec-37 discs and red Dynapro 6 calipers form this 12.19-inch front kit for Roadster Shop Mustang II spindles. Aluminum hats and registration adapters retain the installed hubs, with BP-10 pads completing the six-piston friction assemblies. Wilwood Engineering, based in Camarillo, California, has designed and manufactured disc brake systems since its founding by Bill Wood in 1977. The range spans calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications.
Technical Details
Calipers and pads
- Calipers: Dynapro 6; 6 pistons
- Caliper finish: Red Powder Coat
- Body construction: Forged aluminum
- Pistons: stainless
- Mounting: lug
- Hydraulic inlet: 1/8-27 NPT
- Included pad compound: BP-10
- Listed piston bore sizes: 1.62 / 1.38 / 1.38 in
Kit contents and separate parts
- Manufacturer part number: 140-18365-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
Installation documents
Rotors and mounting dimensions
- Rotors: 12.19 in; 309.63 mm diameter x 0.81 in; 20.57 mm thick; vented Spec-37 Iron
- Friction faces: GT Slotted
- Rotor coating/finish: Black Electro Coat
- Internal vanes: 36 curved
- Hats: Aluminum; Black E-Coat; 1.770-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; 5 X 5 in; 5 X 127 mm
Fitment & Compatibility
For the Roadster Shop Mustang II front upright, using the five-on-4.75-inch hub arrangement specified by Wilwood. This Dynapro 6 package uses 12.19-inch rotor assemblies, so match its wheel diagram rather than a different Roadster Shop brake option. Verify the steering-arm bracket installation and use the register adapters and shims for alignment. The original Ford vehicle name or year does not establish compatibility with this custom spindle. No hubs, spindles or flexlines are supplied; select hoses that remain clear and slack enough across steering and suspension travel. Nominal minimum wheel diameter: 15 in; 381 mm. The linked wheel-clearance diagram must confirm barrel and spoke clearance; wheel diameter alone does not guarantee fit.
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.
Our team at PMB Performance draws on 20+ years of brake and restoration work. We can help you review the application requirements before you assemble the system.
