Wilwood GM Second-Generation AFX ProSpindle Front Brake Conversion, Red Six-Piston Calipers, GT Rotors and Hubs

Red six-piston calipers clamp slotted GT front rotors on listed GM second-generation AFX installations. Match the required spindle and wheel envelope. 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

• Application / axle position: Front Brake Kits - Street Performance; front position
• Rotor specification: 14.00 × 1.25 inches; Spec-37 Iron; vented; GT Slotted
• Supplied service-pad compound: BP-20
• Wheel-size starting point: 18 in; verify the complete clearance drawing
• Flexline inclusion: Not included; listed optional reference 220-10509 must be checked for the actual application
• Caliper family, piston count and finish: 6-piston AERO6; Red Powder Coat
• Hydraulic inlet: 1/8-27 NPT
• Wheel-face change: +.65 inches per side relative to the original wheel face; verify wheel and fender clearance
• 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
• Caliper mounting: Radial; piston material: stainless steel
• Items outside the kit: spindles, master cylinder, brake booster
• Supplied mounting components: mounting hardware, wheel hubs
• Manufacturer part number: 140-16197-R
• Quantity: Sold as a kit.

Fitment & Compatibility

Only the specified second-generation Wilwood AFX 2-inch drop ProSpindle is the intended hub interface; this is not a stock-spindle conversion. DS-1432 identifies ProSpindle kit 831-15958, purchased separately. The full application chart below identifies the vehicle and chassis combinations that use that spindle. The +0.65-inch hub change moves each wheel outward relative to the catalog comparison, so assess tire-to-fender space as well as caliper-to-wheel clearance. Supply suitable hydraulic hoses separately and match the front and 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.