Wilwood Front Black Dynapro Brake Kit, 12.19-Inch Plain Rotors for Mustang II/Pinto/Bobcat Disc Spindles

This larger front conversion pairs black Dynapro dust-boot calipers with plain 12.19-inch rotors and dual-pattern five-lug hubs. The mounting arrangement is restricted to the documented original disc spindles. Bill Wood founded Wilwood Engineering in 1977, and the manufacturer is based in Camarillo, California. Wilwood designs and manufactures disc brake systems alongside calipers, master cylinders, rotors, fittings, brake lines and valves. The motorsport, street-performance and specialized ranges depend on components selected to work within a complete braking system.

Technical Details

• Manufacturer part number: 140-13378
• Application and package: Front Brake Kits - Street Performance; Front Kits; Disc; Sold as a kit.
• Rotor dimensions: 12.19 in; 309.63 mm outside diameter; 0.81 in; 20.57 mm thickness
• Rotor construction: Iron; Vented; Plain Face
• 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
• 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

Fitment & Compatibility

Match the 1974–1978 Mustang II, 1974–1980 Pinto or 1975–1980 Bobcat disc spindle to DS1020. Check for caliper-ear interference and perform only the modification actually required. Verify five-lug wheel compatibility and the complete nominal 15-inch wheel envelope.

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.

Check how the wheel rests on the hub before evaluating spoke clearance. Part 300-11961 (sold separately) is the specified 6.60-inch-diameter, 0.20-inch-thick steel spacer for overhanging wheel contact surfaces. The separate 300-10716 hub shield is recommended for stamped steel wheels without overhang and measures 6.15 inches by 0.09 inch.

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

Ask PMB Performance for help comparing the installation requirements. We have more than 20 years of experience working with brake parts and fitment.

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