Wilwood Front Dynapro Dust-Boot Brake Package, Black, 12.19-Inch Plain Rotors for GM/Ridetech Spindles

Larger plain-face rotors and black dust-boot calipers define this 12.19-inch front conversion. The supplied hubs retain separate wheel and rotor mounting interfaces, and the kit applies only to the factory or Ridetech spindle arrangements documented for each vehicle. Since its founding by Bill Wood in 1977, Wilwood Engineering has focused on disc brake system design and manufacturing. Based in Camarillo, California, it offers calipers, rotors, brake lines, master cylinders, fittings and valves for motorsport, street-performance and specialized installations. Choose components to satisfy the requirements of the entire braking system.

Technical Details

• Manufacturer part number: 140-13203
• 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: +.19 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; 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

Fitment & Compatibility

Inspect the spindle first, then use DS999 to check any required modification and wheel-pad support. The nominal 15-inch wheel requirement is a starting point; spoke profile and caliper clearance still need measurement.

Documented model groups, subject to each year, submodel and spindle/axle qualification: Ford Falcon, Mustang, F-100; Mercury Comet; Chevrolet Chevy II, Corvette, Chevelle, El Camino, Malibu, Camaro, Nova, Monte Carlo; Buick Skylark, Special, Sportwagon, Gran Sport, GS 350, GS 400, GS, GS 455, Apollo; Oldsmobile 442, Cutlass, F85, Vista Cruiser, Cutlass Supreme, Omega; Pontiac Acadian, Beaumont, GTO, LeMans, Tempest, Firebird, Grand Prix, Ventura; GMC Sprint. Application distinctions include w/ Ridetech Pin Spindle; Disc Brake Spindle; Drum Brake Spindle; Drum Brake Front; Base / Base; Z/28 w/ 4 Wheel Disc; w/ O.A.I. Drum Brake Spindles; Drum Brake Spindle w/o O.A.I.

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 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.

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 DS999

For fitment assistance backed by more than 20 years of experience, share the installed brake configuration with PMB Performance before ordering.

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