Wilwood Front Caliper and Rotor Kit, Polished FNSL6R - Mustang II (1974–1978), Pinto (1974–1980) and Bobcat (1975–1980), OE Disc Spindles, 14.00-inch GT Slotted Rotors

The polished version of this front kit pairs bright FNSL6R calipers with GT slotted 14-inch rotors. Included aluminum hubs replace the original hub arrangement, using bearings and wheel studs supplied for the specified disc spindles. Wilwood Engineering designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines. Bill Wood founded the company in 1977; its Camarillo, California operation serves motorsport, street-performance and specialized applications. Each part must be selected to work with the complete brake system and its requirements.

Technical Details

Rotors and mounting dimensions

• Rotors: 14.00 in; 355.6 mm diameter x 1.10 in; 27.94 mm thick; vented Spec-37 Iron
• Friction faces: GT Slotted
• Rotor finish: Black Electro Coat
• Internal vanes: 72 curved
• Hats: aluminum; Black E-Coat; 1.880-inch hat offset
• Supplied hub wheel-stud patterns: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm
• Wheel studs: 1/2-20 thread; supplied with the hubs

Kit contents and separate parts

• Manufacturer part number: 140-9802-P
• Supply: one kit with brake components for both sides of the front axle
• Mounting hardware: included
• Hubs: included with bearings and seals
• Spindles, master cylinder and brake booster: not included
• Hydraulic hoses: not included
• Includes aluminum hubs, bearings, seals and 1/2-20 studs; choose 5 x 4.50 or 5 x 4.75-inch wheel pattern.

Calipers and friction components

• Calipers: Forged Narrow Superlite 6R; 6 pistons per caliper
• Caliper finish: Polished
• Body construction: Forged aluminum
• Piston material: stainless
• Caliper mounting: radial
• Hydraulic inlet: 1/8-27 NPT
• Included pad compound: BP-10
• Listed piston bore sizes: 1.62 / 1.12 / 1.12 in

Fitment & Compatibility

For the Mustang II 1974–1978, Pinto 1974–1980 and Bobcat 1975–1980 applications in the table below using original disc-brake spindles. This larger 14-inch assembly uses new aluminum hubs and the original compatible spindles. Install the included studs in the wheel-matching pattern and compare the DS-563 drawing with both wheel barrel and spokes. Brake hoses are not supplied: select the appropriate universal flexline length and fittings, including the listed 220-8307 option where its 18-inch length suits the installation. Nominal minimum wheel diameter: 18 in; 457.2 mm. Compare the actual wheel barrel and spokes with the linked clearance drawing; diameter alone does not establish fit.

Installation documents

• Installation instructions

WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.

With over 20 years of brake-system and restoration experience, PMB Performance can help you review the application, wheel clearance and remaining parts for the installation.

Vehicle Applications

Application Notes

1. 14" Rotor
2. Kit fits 74-80 Pinto / Mustang II original disc brake spindles only.
3. Universal Flexline kits available: 220-7056 (14"), 220-7699 (16") or 220-8307 (18"). Choose correct length for your application.
4. If a separate replacement master cylinder is installed, its pushrod may require modification. No master cylinder is included in this front brake kit.
5. This is a front service-brake kit. Select any rear parking-brake cable separately for the vehicle's actual rear brake system.
6. Line kit included (manufacturer): None
7. Front line-kit reference: 220-8307