Fitment questions?
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Product details
Red powder coating identifies this TC6R rear version, paired with SRP drilled and slotted rotor faces. The 4.84-inch-register hats and retained parking mechanism make axle identification and original brake condition central to the installation. Wilwood Engineering was founded in 1977 by Bill Wood and is based in Camarillo, California. It designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications, with calipers, brake rotors, master cylinders, valves, fittings and brake lines in its range. Every component must suit the complete brake system in which it operates.
Technical Details
Kit contents and separate parts
- Manufacturer part number: 140-9406-DR
- 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.
Calipers and friction components
- Calipers: TC6; 6 pistons per caliper
- Caliper finish: Red 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: SRP Drilled & 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
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.
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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.
