Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
Black FNSL6R front brakes fit the documented aluminum ProSpindle system with 14-inch GT rotors. Verify the separate hub and radial bracket clearance. These brake components attach to the separately supplied aluminum ProSpindle and sealed hub assembly. Wilwood Engineering designs and manufactures disc brake systems from its base in Camarillo, California. Bill Wood founded the company in 1977. Its range of calipers, brake rotors, master cylinders, valves, fittings and brake lines serves motorsport, street-performance and specialized applications; each part must suit the requirements of the complete braking system.
Technical Details
- Manufacturer part number: 140-17986
- Brake assembly: front conversion kit; Sold as a kit.
- Calipers: Forged Narrow Superlite 6R; 6 pistons per caliper; Black Powder Coat
- Caliper mounting: Radial
- Included pad compound: BP-10
- Piston material: Stainless
- Hydraulic caliper inlet: 1/8-27 NPT
- Rotor dimensions and construction: 14.00 × 1.10 inches; Spec-37 Iron; GT Slotted
- Wheel-size reference: 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 flexlines: Not included; supply suitable hoses and fittings separately
- Mounting hardware: Included; verify the installed fastener engagement
- Not included: spindles, wheel hubs, master cylinder or brake booster
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
PMB Performance brings over 20 years of parts and fitment experience to component selection. Share the ProSpindle identification, hub configuration and actual wheel measurements so we can help check the configuration before ordering.
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.
