Wilwood black TX6R rear layout for a 4.63-inch GM/H2 axle register, showing 16-inch slotted rotors, hats, pads and brackets
Wilwood black TX6R rear caliper with a 16-inch slotted rotor and hat for the 4.63-inch GM/H2 axle register
Wilwood black TX6R rear layout for a 4.63-inch GM/H2 axle register, showing 16-inch slotted rotors, hats, pads and brackets
Wilwood black TX6R rear caliper with a 16-inch slotted rotor and hat for the 4.63-inch GM/H2 axle register

Wilwood Rear TX6R Kit, Black 16-Inch Brakes for GM/H2 Axles with 4.63-Inch Registers — Selected 1999–2009 Applications

SKU: 140-13878

$3,200.56 Sale
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Fitment questions?

Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.

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Product details

A 4.63-inch rear axle center register is the defining fitment condition for this black TX6R conversion. The 16-inch slotted rotor package uses the matching OE parking-brake assembly and requires separate flexlines. Wilwood Engineering’s work covers the design and manufacture of disc brake systems for motorsport, street-performance and specialized applications. Bill Wood founded the company in 1977 in a business now based in Camarillo, California. Its calipers, master cylinders, brake rotors, brake lines, valves and fittings must be selected around the complete system.

Technical Details

  • Manufacturer: Wilwood
  • Manufacturer part number: 140-13878
  • Kit classification: Rear Brake Kits - Street Performance
  • Axle position: Rear Kits
  • Brake Type: Disc
  • Selling unit: Sold as a kit.
  • Pistons per service caliper: 6
  • Service-caliper piston construction: Stainless
  • Service-caliper mount: Radial
  • Caliper body construction: Forged aluminum
  • Caliper Color: Black
  • Caliper Finish: Black Powder Coat
  • Caliper Inlet Port Diameter: 1/8-27 NPT
  • Caliper family: TX6R
  • Pad compound: BP-22
  • Rotor Outside Diameter: 16.00 in; 406.4 mm
  • Rotor Thickness: 1.38 in; 35.05 mm
  • Rotor Material: Iron
  • Surface Type: GT Slotted
  • Rotor construction: Vented
  • Bolt Circle Diameter: 8 x 6.5 in; 8 x 165.1 mm
  • Catalog stud / mounting-hole reference: 0.640 in; 16.26 mm
  • Rotor surface finish: Black Electro Coat
  • Hat material: Iron
  • Hat finish: Black E-Coat
  • Hat offset dimension: 1.780 in
  • Minimum wheel guidance (clearance drawing required): 20 in; 508 mm
  • Required rear axle / flange: OEM
  • Catalog axle-offset reference: 0.00 in; 0 mm
  • Spindle Included: No
  • Mounting Hardware Included: Yes
  • Separate wheel hubs included: No
  • Master Cylinder Included: No
  • Brake Booster Included: No
  • Brake Lines Included: No
  • Rear hose references requiring confirmation: 220-9811; 220-11196

Fitment & Compatibility

Measure the rear axle center register: this kit requires 4.63 inches and retains the matching OE parking brake. Separate hoses are required. The product listing references 220-9811 and 220-11196, while DS-1093 instead identifies 220-18649 for 2007–2010; have Wilwood confirm the current rear hose kit for the actual year and axle. Front-hose references do not specify the rear connection.

Listed models: Silverado 2500 Pickup; Sierra 2500 Pickup; Suburban 2500; Yukon XL 2500; Silverado 1500 HD Pickup; Silverado 2500 HD Pickup; Sierra 1500 HD Pickup; Sierra 2500 HD Pickup; H2. Use the fitment table below for the individual years, submodels and equipment conditions.

Wilwood product specifications · Installation instructions

PMB Performance brings over 20 years of experience to brake-component selection. Provide the actual hardware specification when the brake system has been modified.

Years Make Model Submodel Model option Front brakes Rear brakes Kit application Notes
1999-2004 Chevrolet Silverado 2500 Pickup 8 Lug - All w/ 4.63 Center Register Rear Disc Disc Rear Kit 1, 2, 3
1999-2004 GMC Sierra 2500 Pickup 8 Lug - All w/ 4.63 Center Register Rear Disc Disc Rear Kit 1, 2, 3
2000 Chevrolet Suburban 2500 8 Lug - 4 x 4 w/ 4.63 Center Register Rear Disc Disc Rear Kit 1, 2, 3
2000 GMC Yukon XL 2500 8 Lug - 4 x 4 w/ 4.63 Center Register Rear Disc Disc Rear Kit 1, 2, 3
2001-2002, 2006 Chevrolet Silverado 1500 HD Pickup 8 Lug - All Disc Disc Rear Kit 1, 2, 3
2001-2006 Chevrolet Silverado 2500 HD Pickup 8 Lug - All w/ 4.63 Center Register Rear Disc Disc Rear Kit 1, 2, 3
2001-2006 Chevrolet Suburban 2500 8 Lug - All w/ 4.63 Center Register Rear Disc Disc Rear Kit 1, 2, 3
2001-2002, 2006 GMC Sierra 1500 HD Pickup 8 Lug - All Disc Disc Rear Kit 1, 2, 3
2001-2006 GMC Sierra 2500 HD Pickup 8 Lug - All w/ 4.63 Center Register Rear Disc Disc Rear Kit 1, 2, 3
2001-2006 GMC Yukon XL 2500 8 Lug - All w/ 4.63 Center Register Rear Disc Disc Rear Kit 1, 2, 3
2003, 2005 Chevrolet Silverado 1500 HD Pickup 8 Lug - All w/o 4 wheel steering Disc Disc Rear Kit 1, 2, 3
2003, 2005 GMC Sierra 1500 HD Pickup 8 Lug - All w/o 4 wheel steering Disc Disc Rear Kit 1, 2, 3
2003-2006 Hummer H2 Base Base Disc Disc Rear Kit 1, 2, 3
2005-2006 Hummer H2 Adventure Adventure Disc Disc Rear Kit 1, 2, 3
2005-2006 Hummer H2 Luxury Luxury Disc Disc Rear Kit 1, 2, 3
2007-2009 Hummer H2 Adventure Adventure Disc Disc Rear Kit 1, 4, 2, 3
2007-2009 Hummer H2 Base Base Disc Disc Rear Kit 1, 4, 2, 3
2007-2009 Hummer H2 Luxury Luxury Disc Disc Rear Kit 1, 4, 2, 3
2007 Hummer H2 Special Edition Special Edition Disc Disc Rear Kit 1, 4, 2, 3