Roadster Shop Mustang II Spindles: Wilwood 11.38-inch GT Slotted Front Brakes with Black Forged Dynalite Internal Calipers

SKU: 140-18364

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Product details

The black Dynalite version of this Roadster Shop front kit uses 11.38-inch GT slotted discs and four-piston lug-mount calipers. The 0.81-inch vented rotors attach to aluminum hats, retaining the hubs in the specified Mustang II spindle/upright arrangement. 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: Forged Dynalite Internal; 4 pistons
  • Caliper finish: Black 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: 1.75 / 1.75 in

Kit contents and separate parts

  • Manufacturer part number: 140-18364
  • 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: 11.38 in; 289.05 mm diameter x 0.81 in; 20.57 mm thick; vented 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

This 11.38-inch Dynalite kit fits the Roadster Shop Mustang II spindle/upright arrangement. The manufacturer describes a five-on-4.75-inch hub application; confirm the actual Roadster Shop hardware before selecting it for a custom build. It is not a claim of direct fit to a factory Mustang based on model year. Install the brackets at the prescribed steering-arm location, then use the supplied register adapters and shims to center the calipers over the rotors. Existing compatible hubs are retained. Spindles and flexlines are separate, with hose length chosen for the suspension's full movement. 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.