Wilwood Front Classic Dynalite-M Kit for Mustang II, Pinto and Bobcat Disc Spindles, 11.03-Inch Hub/Rotors — Selected 1974–1980 Applications

The Classic Dynalite-M front kit uses 11.03-inch one-piece hub-and-rotor assemblies for the specified Mustang II-type disc spindles. Its dual wheel pattern and included bearings must be matched to the installed spindle and wheels. 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: Wilwood
• Manufacturer part number: 140-14271
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• Minimum wheel guidance (clearance drawing required): 14 in; 355.6 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: Integral hub-and-rotor assemblies included; no separate bolt-on hub
• Rotor Outside Diameter: 11.03 in; 280.16 mm
• Rotor Thickness: 0.88 in; 22.35 mm
• Rotor Material: Iron
• Surface Type: Plain Face
• Rotor construction: Vented
• Bolt Circle Diameter: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm
• Catalog stud / mounting-hole reference: 0.50 in; 12.70 mm
• Rotor surface finish: Plain
• Pistons per service caliper: 4
• Service-caliper piston construction: Stainless
• Service-caliper mount: Lug
• Caliper body construction: Forged aluminum
• Caliper Color: Anodize
• Caliper Finish: Type III Anodize
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: Dynalite-M
• Pad compound: BP-10
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: No

Fitment & Compatibility

The kit requires the specified 1974–1978 Mustang II-type factory disc spindle used by the listed Mustang II, Pinto and Bobcat applications; it is not a universal original-spindle conversion. DS-1186 includes one-piece iron hub/rotors, bearings and 1/2-20 studs, with 5 x 4.50 and 5 x 4.75-inch wheel options. Wilwood lists a +0.27-inch hub offset per side. Flexlines are separate, and the master-cylinder pushrod may need modification; verify the wheel drawing before installation.

Listed models: Mustang II; Pinto; Bobcat. Use the fitment table below for the individual years, submodels and equipment conditions.

Wilwood product specifications · Installation instructions

With more than 20 years of parts and fitment experience, PMB Performance can help compare the existing brake assembly with the required component.