Wilwood Black Front SRP Brake Conversion for Mustang II/Pinto/Bobcat Disc Spindles, 11-Inch Rotors and Five-Lug Hubs

Drilled-and-slotted rotor faces accompany black four-piston dust-boot calipers in this front conversion. Its included five-lug hubs require compatible wheels on the documented Mustang II/Pinto/Bobcat spindle. Wilwood Engineering designs and builds disc brake systems in Camarillo, California. Bill Wood established the company in 1977; it supplies brake rotors, calipers, master cylinders, valves, fittings and lines for specialized applications, street performance and motorsport. The complete brake system determines which individual components are appropriate.

Technical Details

• Manufacturer part number: 140-13377-D
• Application and package: Front Brake Kits - Street Performance; Front Kits; Disc; Sold as a kit.
• Hydraulic inlet: 1/8-27 NPT
• Wheel bolt pattern(s): 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm
• Wheel-stud thread: 1/2-20 in
• Wheel diameter starting requirement: 14 in; 355.6 mm; verify the individual wheel against the installation drawing
• Included mechanical components: Mounting hardware: Yes; hub(s): Yes; spindle(s): No
• Hydraulic components supplied: Master cylinder: No; brake booster: No; brake lines: No
• Specified pad compound: BP-10
• Published wheel-position / hub offset: .00 inch per side; verify against the documented spindle assembly
• Rotor dimensions: 11.00 in; 279.4 mm outside diameter; 0.81 in; 20.57 mm thickness
• Rotor construction: Iron; Vented; SRP Drilled & Slotted
• Caliper assembly: Dynapro Dust-Boot; 4 pistons per caliper; Forged Aluminium body; Lug mount
• Piston and finish specification: Aluminum pistons; Black calipers; Black Powder Coat

Fitment & Compatibility

Match the exact model-year disc spindle with DS1019. Follow its conditional instructions for original-caliper-ear interference, preserving the bracket mounting holes. Check the new five-lug wheel pattern and supported contact area; four-lug wheels cannot be retained.

Documented model groups, subject to each year, submodel and spindle/axle qualification: Ford Mustang II, Pinto; Mercury Bobcat.

Requires the documented original disc spindle and compatible five-lug wheels. Four-lug wheels are incompatible. DS1019/DS1020 calls for limited removal of original caliper ears only where they interfere; preserve the bracket mounting holes.

The installation reference distinguishes wheel-pad overhang from a supported stamped steel wheel. Overhang requires a 0.20-inch-thick steel spacer, 6.60 inches in diameter, part 300-11961 (listed in the installation parts list). A stamped wheel without overhang should instead use the separate 0.09-inch-thick, 6.15-inch-diameter shield 300-10716.

Flexible brake lines are not included. Original lines are not assumed to connect to the Wilwood calipers; select the application-specific or correctly sized universal hose and matching fittings.

Kit includes 5 lug hubs. Not applicable to 4 lug vehicles.

Universal Flexline kits available: 220-7056 (14"), 220-7699 (16") or 220-8307 (18"). Choose correct length for your application.

A separately selected master cylinder may require modification of the existing pushrod assembly; it is not supplied in this brake kit.

An independently added universal parking-brake cable system may require cable or vehicle modifications. It is separate from this front service-brake kit.

Manufacturer References

• Wilwood exact kit specifications
• Wilwood installation instructions DS1019

PMB Performance brings over 20 years of experience to brake-component selection. Provide the actual hardware specification when the brake system has been modified.

Review the complete application table below with the year, submodel and installation qualifications above.