Wilwood Black Six-Piston Front Brake Conversion with SRP Rotors and Hubs for Listed GM AFX ProSpindle Vehicles

Specify drilled and slotted 14-inch front rotors for listed GM AFX ProSpindle vehicles. Black AERO6 calipers require separate compatible flexlines. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. It designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines. Its range serves motorsport, street-performance and specialized applications; each component must match the complete brake system.

Technical Details

• Wheel-face change: +.38 inches per side relative to the original wheel face; verify wheel and fender clearance
• Rotor dimensions, construction and face: 14.00 × 1.25 inches; Spec-37 Iron; vented; SRP Drilled & Slotted
• Rotor / hub bolt-circle specification: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm
• Nominal wheel diameter reference: 18 in; verify the complete clearance drawing
• Hydraulic caliper specification: 6-piston AERO6; Black Powder Coat
• Supplied service-pad compound: BP-10
• Mounting and piston details: Radial; piston material: stainless steel
• Hydraulic inlet: 1/8-27 NPT
• Hose provision: Not included; listed optional reference 220-7056 must be checked for the actual application
• Hardware supplied: mounting hardware, wheel hubs
• Components to provide separately: spindles, master cylinder, brake booster
• Manufacturer part number: 140-16209-D
• Kit function: Front Brake Kits - Street Performance; front position
• Quantity: Sold as a kit.

Fitment & Compatibility

Use this hub conversion with the specified Wilwood AFX 2-inch drop ProSpindle, not an original GM spindle or a second-generation ProSpindle selected by appearance. DS-1433 identifies spindle kit 831-15890, sold separately, and calls for the appropriate customer-supplied steering arm. Applications and model-year boundaries are retained in the table below. The catalog +0.38-inch hub change must be included in wheel and fender planning. Complete the installation with correctly routed compatible flexlines and verify pad clearance, bearing adjustment and front-to-rear brake balance.

Wilwood product specifications · Installation instructions

PMB Performance has more than 20 years of parts and fitment experience. Provide the model, year, installed spindle or hub, existing brake package and wheel measurements so we can help check the complete conversion.

Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.