Wilwood 14-Inch GT Front Brake Package for Aluminum ProSpindles, Red FNSL6R Calipers

Plan a slotted 14-inch front conversion around red FNSL6R calipers and the specified aluminum ProSpindle. Confirm the actual hub and wheel envelope. These brake components attach to the separately supplied aluminum ProSpindle and sealed hub assembly. Camarillo, California, is home to Wilwood Engineering, the disc-brake manufacturer Bill Wood founded in 1977. Wilwood designs and manufactures systems and components including master cylinders, calipers, rotors, valves, fittings and brake lines. Those parts serve motorsport, street-performance and specialized uses and must be selected as part of the complete brake system.

Technical Details

• Hydraulic service-caliper specification: Forged Narrow Superlite 6R; 6 pistons per caliper; Red Powder Coat
• Caliper attachment: Radial
• Brake pads supplied: BP-10
• Piston type: Stainless
• Service-caliper port: 1/8-27 NPT
• Rotor assembly specification: 14.00 × 1.10 inches; Spec-37 Iron; GT Slotted
• Wheel envelope: 18 in; the complete wheel-clearance drawing determines fit
• Required separate assembly: Wilwood aluminum ProSpindle sealed-hub kit 830-17728; brake kit does not include the spindle or hub
• Hat mounting pattern: 5 × 4.50 / 4.75 inches; verify the mating ProSpindle hub and wheel arrangement
• Hydraulic hose selection: Not included; supply suitable hoses and fittings separately
• Hardware provision: Included; verify the installed fastener engagement
• Not included: spindles, wheel hubs, master cylinder or brake booster
• Manufacturer identification: 140-17986-R
• Application and supplied quantity: front conversion kit; Sold as a kit.

Fitment & Compatibility

For the 14-inch Superlite conversion, use the aluminum Wilwood ProSpindle sealed-hub assembly 830-17728 rather than assuming another Mustang II-style spindle is interchangeable. The separate spindle/hub kit supports the documented 5 × 4.50/4.75-inch rotor-hat interface. DS-1615 identifies the longer caliper studs and additional bracket spacers used by this 14.00 × 1.10-inch package. Verify those components, rotor centering and the complete wheel profile. Hydraulic hoses and any application-specific steering-arm work remain separate. The front-steer arm supplied with the separate ProSpindle kit does not establish correct rear-steer geometry; rear-steer arrangements require application-specific steering arms.

Wilwood installation and compatibility information · ProSpindle kit configurations

For help matching the brake assembly, contact PMB Performance with the ProSpindle identification, hub configuration and actual wheel measurements. We have over 20 years of experience working through parts and fitment details.

Manufacturer warning: 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.