Wilwood Red Dynapro Front Brake Kit with 12.19-Inch SRP Rotors, Mustang II/Pinto/Bobcat Original Disc Spindles

Red four-piston dust-boot calipers and drilled-and-slotted rotors operate with replacement hubs in this front conversion. The larger 12.19-inch assembly requires its own wheel-clearance check. Founded by Bill Wood in 1977, Wilwood Engineering designs and manufactures disc brake systems from Camarillo, California. Its calipers, brake rotors, master cylinders, valves, fittings and brake lines serve motorsport, street-performance and specialized applications. Individual components must be selected for the complete brake system.

Technical Details

• Manufacturer part number: 140-13378-DR
• 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: 15 in; 381 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: 12.19 in; 309.63 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; Red calipers; Red Powder Coat

Fitment & Compatibility

Verify the original disc spindle and exact model-year application using DS1020. These hubs require matching five-lug wheels. If original caliper ears interfere, follow the limited trimming procedure without cutting away the mounting holes.

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.

If the wheel contact surface overhangs the hub face, use steel spacer 300-11961, specified as 6.60 inches in diameter and 0.20 inch thick (sold separately). Stamped steel wheels without that overhang should use the separately sourced hub shield 300-10716, measuring 6.15 inches across and 0.09 inch thick.

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 fits 74-80 Pinto / Mustang II original disc brake spindles only.

Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.

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 DS1020

PMB Performance has over 20 years of brake-parts experience. Send the installed component details if you need help checking this replacement.

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