Wilwood Front FNSL6R Calipers and 14.00-inch GT Slotted Rotors - GM A/F/X-Body and Ridetech Pin Spindles (1960–1982 Applications) Kit, Black

Black six-piston Superlite calipers and 14-inch GT slotted rotors define this front hub upgrade. It includes bearings, seals and aluminum hubs for the listed spindle configurations, with installation-specific machining and track-width requirements. Wilwood Engineering was founded in 1977 by Bill Wood and is based in Camarillo, California. It designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications, with calipers, brake rotors, master cylinders, valves, fittings and brake lines in its range. Every component must suit the complete brake system in which it operates.

This is the black-caliper, GT slotted version of the 14-inch FNSL6R hub kit. GT rotors have slotted faces with no cross-drilling, the usual choice for a car that sees track days, because drilled holes can crack under repeated hard heat. The same kit comes with red calipers as 140-9804-R and polished as 140-9804-P. For drilled-and-slotted rotors with black calipers, see 140-9804-D.

Technical Details

Kit contents and separate parts

• Manufacturer part number: 140-9804
• 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 hubs, wheel bearings and seals; 1/2-20 studs fit the selected 5 x 4.50 or 5 x 4.75-inch pattern.

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

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; 1.750-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

Match the exact spindle entry in the table below before choosing this 14-inch hub kit. Original GM A/F/X-body disc/drum installations and the listed Ridetech pin-spindle conversions have different selection requirements; the Ford, Mercury and Corvette entries require their specified modified hardware. Some early GM spindles need machining as illustrated in DS-565. Compared with the OE mounting face, the supplied hubs add 0.38 inch per side on drum-brake applications and 0.09 inch on disc-brake applications. Verify tire/fender clearance and choose the proper separate hydraulic lines. 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.

PMB Performance offers parts-selection support backed by more than 20 years in brake systems and restoration. Let us help review the details of your vehicle and installation.

Vehicle Applications

Application Notes

1. 14" Rotor
2. Universal Flexline kits available: 220-7056 (14"), 220-7699 (16") or 220-8307 (18"). Choose correct length for your application.
3. This is a front service-brake kit. Select any rear parking-brake cable separately for the vehicle's actual rear brake system.
4. Line kit included (manufacturer): None
5. Front line-kit reference: 220-7056