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

Wilwood Rear Anodized TX6R Conversion for GM Trucks and H2, 4.63-Inch Pilot and 16-Inch Rotors — Selected 1999–2009 Applications

SKU: 140-13878-C

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Product details

Anodized TX6R rear calipers are combined with iron parking-brake hats for the specified 4.63-inch register. These 16.00-inch rotors are intended for the listed GM and Hummer rear hubs, not an interchangeable center-pilot size. Bill Wood founded Wilwood Engineering in 1977, and the manufacturer is based in Camarillo, California. Wilwood designs and manufactures disc brake systems alongside calipers, master cylinders, rotors, fittings, brake lines and valves. The motorsport, street-performance and specialized ranges depend on components selected to work within a complete braking system.

Technical Details

  • Manufacturer: Wilwood
  • Manufacturer part number: 140-13878-C
  • Kit classification: Rear Brake Kits - Street Performance
  • Axle position: Rear Kits
  • Brake Type: Disc
  • Selling unit: Sold as a kit.
  • 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
  • Pistons per service caliper: 6
  • Service-caliper piston construction: Stainless
  • Service-caliper mount: Radial
  • Caliper body construction: Forged aluminum
  • Caliper Color: Anodize
  • Caliper Finish: Type III Anodize
  • Caliper Inlet Port Diameter: 1/8-27 NPT
  • Caliper family: TX6R
  • Pad compound: BP-22

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

Ask PMB Performance for help comparing the installation requirements. We have more than 20 years of experience working with brake parts and fitment.

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