Wilwood AFX ProSpindle Front Hub Brake Kit for Listed GM Vehicles, Black AERO6 Calipers and 14-Inch GT Rotors

Black AERO6 front calipers and slotted GT rotors equip listed GM AFX ProSpindles. Match the first-generation spindle and 0.38-inch hub offset change. Founded in 1977 by Bill Wood, Wilwood Engineering is based in Camarillo, California. The company designs and manufactures disc brake systems and components for motorsport, street-performance and specialized use. Calipers, master cylinders, brake rotors, valves, brake lines and fittings form its range; the complete brake system determines which individual components are suitable.

Technical Details

• Manufacturer part number: 140-16209
• Kit function: Front Brake Kits - Street Performance; front position
• Service calipers: 6-piston AERO6; Black Powder Coat
• Caliper mounting: Radial; piston material: stainless steel
• Rotor package: 14.00 × 1.25 inches; Spec-37 Iron; vented; GT Slotted
• Supplied service-pad compound: BP-20
• Hydraulic inlet: 1/8-27 NPT
• 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
• Wheel-face change: +.38 inches per side relative to the original wheel face; verify wheel and fender clearance
• Nominal wheel diameter reference: 18 in; verify the complete clearance drawing
• Hydraulic flexlines: Not included; listed optional reference 220-7056 must be checked for the actual application
• Included installation items: mounting hardware, wheel hubs
• Not supplied: spindles, master cylinder, brake booster
• 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.