Wilwood Front 16-Inch GT Rotor Package, Red Six-Piston Calipers — GM Six-Lug Trucks & SUVs (1999–2020)

The red-caliper GT package is built around 16-inch vented rotors for the documented six-lug GM hubs. Six-piston TC6 calipers and BP-10 pads are included; the separate flexlines must match the vehicle's year and chassis connection. Calipers, brake rotors, master cylinders, valves, fittings and brake lines are all part of Wilwood Engineering’s range of disc brake systems and components. The Camarillo, California company was founded in 1977 by Bill Wood and designs and manufactures these products for motorsport, street-performance and specialized applications. Compatibility with the complete brake system determines the appropriate component choice.

Technical Details

• Manufacturer part number: 140-8992-R
• 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
• Service calipers: 6-piston TC6; Red Powder Coat; radial mounting
• Brake rotors: 16.00 x 1.38 inches; Iron; GT Slotted; vented
• Included pad compound: BP-10; pistons: stainless steel

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.

Review the complete fitment table below before purchase, retaining the restrictions attached to the chosen vehicle.

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.

With over 20 years of parts and fitment experience, PMB Performance can help review the intended brake installation. Provide your VIN, wheel measurements and any modified axle or spindle details when asking about compatibility.

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.