Wilwood Front Kit for Mustang II (1974–1978), Pinto (1974–1980) and Bobcat (1975–1980), OE Disc Spindles - Black FNSL6R Calipers, GT Slotted Rotors in 14.00-inch Diameter

Black FNSL6R calipers work with 14-inch GT slotted rotors in this Ford-family front hub kit. The larger rings have 72 curved vanes, and the supplied aluminum hubs mount on the listed original disc spindles. From its base in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Founded in 1977 by Bill Wood, its range covers calipers, brake rotors, master cylinders, valves, fittings and brake lines. Individual parts must match the complete brake system and its operating requirements.

Technical Details

Calipers and friction components

• Calipers: Forged Narrow Superlite 6R; 6 pistons per caliper
• Caliper finish: Black Powder Coat
• 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

Kit contents and separate parts

• Manufacturer part number: 140-9802
• 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.

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

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.

Our team at PMB Performance draws on 20+ years of brake and restoration work. We can help check the mounting requirements and component choices for your build.

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