Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
This black TC6R kit is built around the 4.84-inch rear axle register found on the listed GM applications. Slotted 16-inch rotors and iron hats replace the service-brake assembly while retaining the original parking mechanism. Bill Wood established Wilwood Engineering in 1977. Based in Camarillo, California, the company designs and manufactures disc brake systems, calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications. Individual parts must match the complete brake system and its operating requirements.
Technical Details
Calipers and friction components
- Calipers: TC6; 6 pistons per caliper
- Caliper finish: Black Powder Coat
- Body construction: Forged aluminum
- Piston material: stainless
- Caliper mounting: radial
- Hydraulic inlet: 1/8-27 NPT
- Included pad compound: BP-10
- Listed piston bore sizes: 1.75 / 1.38 / 1.38 in
Rotors and mounting dimensions
- Rotors: 16.00 in; 406.4 mm diameter x 1.38 in; 35.05 mm thick; vented Iron
- Friction faces: GT Slotted
- Rotor finish: Black Electro Coat
- Internal vanes: 72 staggered
- Hats: iron; Black E-Coat; 1.910-inch hat offset
- Rotor/hat wheel-stud clearance patterns: 8 x 6.5 in; 8 x 165.1 mm
- Hat wheel-stud clearance holes: 0.640 in, corresponding to the listed hat patterns
Kit contents and separate parts
- Manufacturer part number: 140-9406
- Supply: one kit with brake components for both sides of the rear axle
- Mounting hardware: included
- Hubs: not included
- Spindles, master cylinder and brake booster: not included
- Hydraulic hoses: not included
- Rear hats retain OE parking-brake hardware and require the 4.84-inch register.
Fitment & Compatibility
Only axles with a 4.84-inch center register match these rear rotor hats. Use the table below to identify the listed Silverado/Sierra 2500 and 2500HD, 3500 single-rear-wheel, Avalanche 2500 and Suburban/Yukon XL 2500 configurations. Retain the factory parking mechanism and verify the eight-lug hub before installation. DS-560 lists separate rear hoses 220-9811 for 1999–2006 and 220-18649 for 2007–2011; later listed applications require connection and routing confirmation. A 4.63-inch axle register needs a different kit. Nominal minimum wheel diameter: 20 in; 508 mm. Compare the actual wheel barrel and spokes with the linked clearance drawing; diameter alone does not establish fit.
Installation documents
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.
PMB Performance has supported brake and restoration projects for more than 20 years. Share the vehicle and installed hardware with us for help selecting a compatible package.
Vehicle Applications
| Years | Make | Model | Submodel | Model option | Front brakes | Rear brakes | Kit application | Notes |
|---|---|---|---|---|---|---|---|---|
| 1999-2004 | Chevrolet | Silverado 2500 Pickup | 8 Lug - All w/ 4.84 Center Register Rear | Disc | Disc | Rear Kit | 1, 2, 3 | |
| 1999-2004 | GMC | Sierra 2500 Pickup | 8 Lug - All w/ 4.84 Center Register Rear | Disc | Disc | Rear Kit | 1, 2, 3 | |
| 2001-2006 | Chevrolet | Silverado 2500 HD Pickup | 8 Lug - All w/ 4.84 Center Register Rear | Disc | Disc | Rear Kit | 1, 2, 3 | |
| 2001-2006 | Chevrolet | Suburban 2500 | 8 Lug - All w/ 4.84 Center Register Rear | Disc | Disc | Rear Kit | 1, 2, 3 | |
| 2001-2006 | GMC | Sierra 2500 HD Pickup | 8 Lug - All w/ 4.84 Center Register Rear | Disc | Disc | Rear Kit | 1, 2, 3 | |
| 2001-2006 | GMC | Yukon XL 2500 | 8 Lug - All w/ 4.84 Center Register Rear | Disc | Disc | Rear Kit | 1, 2, 3 | |
| 2002-2006 | Chevrolet | Avalanche 2500 | 8 Lug - All | Disc | Disc | Rear Kit | 1, 2, 3 | |
| 2004-2006 | Chevrolet | Silverado 3500 Pickup | 8 Lug - All w/ Single Rear Wheel | Disc | Disc | Rear Kit | 1, 2, 3 | |
| 2004-2006 | GMC | Sierra 3500 Pickup | 8 Lug - All w/ Single Rear Wheel | Disc | Disc | Rear Kit | 1, 2, 3 | |
| 2007 | Chevrolet | Silverado 2500 HD Pickup | 8 Lug - Classic Style | Disc | Disc | Rear Kit | 1, 4, 2, 3 | |
| 2007 | Chevrolet | Silverado 2500 HD Pickup | 8 Lug - New Style | Disc | Disc | Rear Kit | 1, 4, 2, 3 | |
| 2007-2011 | Chevrolet | Suburban 2500 | 8 Lug - All | Disc | Disc | Rear Kit | 1, 4, 2, 3 | |
| 2007 | GMC | Sierra 2500 HD Pickup | 8 Lug - Classic Style | Disc | Disc | Rear Kit | 1, 4, 2, 3 | |
| 2007 | GMC | Sierra 2500 HD Pickup | 8 Lug - New Style | Disc | Disc | Rear Kit | 1, 4, 2, 3 | |
| 2007-2011 | GMC | Yukon XL 2500 | 8 Lug - All | Disc | Disc | Rear Kit | 1, 4, 2, 3 | |
| 2008-2010 | Chevrolet | Silverado 2500 HD Pickup | 8 Lug - All | Disc | Disc | Rear Kit | 1, 4, 2, 3 | |
| 2008-2010 | GMC | Sierra 2500 HD Pickup | 8 Lug - All | Disc | Disc | Rear Kit | 1, 4, 2, 3 | |
| 2012-2013 | Chevrolet | Suburban 2500 | LS | LS | Disc | Disc | Rear Kit | 1, 4, 2, 3 |
| 2012-2013 | Chevrolet | Suburban 2500 | LT | LT | Disc | Disc | Rear Kit | 1, 4, 2, 3 |
| 2012-2013 | GMC | Yukon XL 2500 | SLE | SLE | Disc | Disc | Rear Kit | 1, 4, 2, 3 |
| 2012-2013 | GMC | Yukon XL 2500 | SLT | SLT | Disc | Disc | Rear Kit | 1, 4, 2, 3 |
Application Notes
- Fits axle with 4.84 center register only.
- Line kit included (manufacturer): None
- Rear hoses are separate. DS-560 specifies 220-9811 for 1999–2006 and 220-18649 for 2007–2011 applications; verify the actual vehicle connections and routing.
- This is a rear brake kit. Front-system hose references do not specify its rear hose selection; use the rear instructions and verify the vehicle connections.
