Wilwood Front Brake Kit: GM Six-Lug Trucks & SUVs (1999–2020) with 16-Inch GT-Slotted Rotors and Black TC6 Calipers

This six-lug GM truck/SUV front kit uses black TC6 calipers and 16-inch GT-slotted iron rotors. Its rotor hats fit the documented factory hubs, with vehicle-generation restrictions and spindle-clearance work checked for the exact application. Based in Camarillo, California, Wilwood Engineering has designed and manufactured disc brake systems and components since Bill Wood founded the company in 1977. Its work spans motorsport, street-performance and specialized applications, with a product range covering master cylinders, calipers, brake rotors, valves, fittings and brake lines. These parts must be chosen for the requirements of the entire brake system.

Technical Details

• Manufacturer part number: 140-8992
• Service calipers: 6-piston TC6; Black Powder Coat; radial mounting
• Brake rotors: 16.00 x 1.38 inches; Iron; GT Slotted; vented
• Included pad compound: BP-10; pistons: stainless steel
• Caliper body: Forged aluminum; hydraulic inlet: 1/8-27 NPT
• Rotor surface finish: Black Electro Coat; rotors are not supplied burnished
• Rotor/hat wheel-stud clearance pattern(s): 6 X 5.5 in; 6 X 139.7 mm; the existing hub/axle pattern is retained
• Hat/rotor stud-hole clearance: 0.630 in; 16.00 mm; this is not a wheel-stud thread designation
• Hydraulic hoses: not included; match the separate lines and fittings to the application
• Kit includes calipers, rotors and mounting hardware; replacement hubs and spindles are not included
• Not included: master cylinder and brake booster
• Wheel clearance: 20-inch wheels may fit; check the complete manufacturer caliper/rotor template
• Quantity: sold as one axle kit

Fitment & Compatibility

For the qualified six-lug Chevrolet, GMC and Cadillac truck/SUV applications below. Coverage includes Silverado/Sierra 1500 through 2018 plus the specified 2019 LD/Limited carryover models, and listed Tahoe, Suburban, Yukon, Yukon XL and Escalade variants through 2020. Avalanche and Escalade EXT have their own earlier end years; trim, police-package and generation restrictions still apply.

DS506 covers factory aluminum and iron spindles. Later casting parting lines may need light machining, and the lower dust shield requires trimming. Flexlines are separate: the instructions identify 220-8998 for 1999–2006 and 220-10980 for the later 16-inch arrangement; confirm the exact year and chassis connection before purchase.

Use the fitment table below to confirm the exact model, year, trim and all numbered application notes.

Manufacturer Resources

• Wilwood kit specifications and wheel-clearance information
• Installation instructions and component list

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.

Ask PMB Performance to help confirm the configuration before ordering if the vehicle has modified brakes or running gear. We have over 20 years of experience with parts and fitment; a VIN plus the installed component details gives us the best starting point.

Vehicle Applications

Application Notes

1. Kit will work with both Iron / Steel and Aluminum spindles.
2. 16" Front kits use Flexline kit 220-8998. 14.25" Front kits use Flexline kit 220-9885.
3. Line kit included (manufacturer): None
4. Front line-kit references for this 16-inch package: 220-8998 for the earlier connection and 220-10980 for the later connection. Verify the exact vehicle year and fittings.
5. 2007-Up, 16" Front kits use Flexline kit 220-10980. 14.25" Front kits use Flexline kit 220-10979
6. For OE rears with dual piston calipers.