Wilwood Front 12.88-Inch Drilled Brake Conversion with Black Superlite Calipers for Aluminum ProSpindles

Drilled 12.88-inch rotors pair with black FNSL6R calipers on the specified aluminum ProSpindle setup. Verify the hub interface and wheel template. 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

• 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: 140-17985-D
• Application and supplied quantity: front conversion kit; Sold as a kit.
• Hydraulic service-caliper specification: Forged Narrow Superlite 6R; 6 pistons per caliper; Black Powder Coat
• Caliper attachment: Radial
• Brake pads supplied: BP-10
• Piston type: Stainless
• Service-caliper port: 1/8-27 NPT
• Rotor assembly specification: 12.88 × 1.10 inches; Spec-37 Iron; SRP Drilled & Slotted
• Wheel envelope: 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

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

Before purchase, send PMB Performance the ProSpindle identification, hub configuration and actual wheel measurements. Our over 20 years of parts and fitment experience helps identify the installation details that need to be checked.

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.