Wilwood Red FNSL6R Front Disc Kit for Aluminum ProSpindles, 12.88-Inch SRP Rotors

Red Superlite six-piston front brakes use 12.88-inch SRP rotors for the aluminum ProSpindle assembly. Verify the separate spindle and hub combination. These brake components attach to the separately supplied aluminum ProSpindle and sealed hub assembly. Bill Wood founded Wilwood Engineering in 1977. Based in Camarillo, California, Wilwood designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications. Its product range includes brake rotors, calipers, master cylinders, valves, fittings and brake lines, selected individually to match the complete brake system.

Technical Details

• Hydraulic caliper inlet: 1/8-27 NPT
• Rotor dimensions and construction: 12.88 × 1.10 inches; Spec-37 Iron; SRP Drilled & Slotted
• Wheel-size reference: 17 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
• Manufacturer part number: 140-17985-DR
• Brake assembly: front conversion kit; Sold as a kit.
• Calipers: Forged Narrow Superlite 6R; 6 pistons per caliper; Red Powder Coat
• Caliper mounting: Radial
• Included pad compound: BP-10
• Piston material: Stainless

Fitment & Compatibility

This Superlite front package requires the specific Wilwood aluminum 2.00-inch-drop ProSpindle and sealed hub 830-17728. Six-piston radial calipers align with 12.88 × 1.10-inch rotors and the 1.875-inch-offset hat. Compare the separate hub with the 5 × 4.50/4.75-inch hat drilling and inspect registration before assembly. DS-1615 identifies the brackets and caliper-height procedure for the 12.88-inch kit. Check the wheel drawing and steering geometry, and provide compatible brake hoses separately. 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

With over 20 years of experience in parts and fitment, PMB Performance can help compare this package with your installation. Provide the ProSpindle identification, hub configuration and actual wheel measurements for that review.

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.