Wilwood Red Six-Piston Superlite Front Brakes for Aluminum ProSpindles, 12.88-Inch GT Rotor and Hat Conversion

Choose red FNSL6R front calipers and 12.88-inch GT rotors for the specified aluminum ProSpindle. Check the complete wheel envelope and flexline fit. These brake components attach to the separately supplied aluminum ProSpindle and sealed hub assembly. Wilwood Engineering was established in 1977 by Bill Wood and is based in Camarillo, California. Disc brake systems and components are its focus, from brake rotors and calipers to master cylinders, valves, brake lines and fittings. Its work spans motorsport, street-performance and specialized applications, with the complete brake system determining the correct individual components.

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: 12.88 × 1.10 inches; Spec-37 Iron; GT 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
• 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-R
• Application and supplied quantity: front conversion kit; Sold as a kit.

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

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.