Wilwood TX6R Rear Kit 15.50in Black 2011-2015 GM Truck/SUV 2500

SKU: WIL140-13874

Disc Brake Kits

WIL TX6R Brake Kit

Wilwood

Wilwood TX6R Rear Kit 15.50in Black 2011-2015 GM Truck/SUV 2500

SKU: WIL140-13874

Disc Brake Kits

WIL TX6R Brake Kit

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Description

Wilwood’s Tactical Extreme TX6R Big Brake rear kits are ultimate in braking performance for Truck, SUV and Armored Vehicles. Using TX6R radial mount six-piston calipers and massive 15.00” to 16.00” GT-60 directional vane Spec-37 alloy rotors, these kits deliver consistent stopping power and extreme duty durability under sustained high heat with this ready to bolt-on kit. The calipers are volume matched for compatibility with original equipment power brake system output. TX6R rear kits replace the factory disc brakes and use the OE parking brake assembly as a compliment to front big brake upgrades. Kits include radial mount caliper brackets, and all the necessary hardware to complete the installation. Braided stainless steel flex lines will need to be purchased for some applications.

Part Type

Disc Brake Kits

Data: v4.2 - Upd: 2026-10-13 07:44:57

Specifications

Product Attributes - UPC: 889545071450
Product Attributes - Brand: Wilwood Disc Brakes
Product Attributes - Position: Rear
Product Attributes - Quantity: Sold as a kit.
Product Attributes - Part Type: Disc Brake Kits
Product Attributes - Product Line: Wilwood TX6R Big Brake Rear Brake Kits
Product Attributes - Rear Rotor Style: Slotted surface
Product Attributes - Rear Caliper Color: Black
Product Attributes - Parking Brake Style: Internal drum
Product Attributes - Rear Rotor Diameter: 15.50 in./393.70mm
Product Attributes - Rear Rotor Included: Yes
Product Attributes - Brake Hoses Included: No
Product Attributes - Front Rotor Included: No
Product Attributes - Rear Caliper Included: Yes
Product Attributes - Rear Caliper Material: Forged billet aluminum
Product Attributes - Brake Booster Included: No
Product Attributes - Front Caliper Included: No
Product Attributes - Front Spindles Included: No
Product Attributes - Parking Brake Provision: Yes
Product Attributes - Rear Rotor Construction: Vented
Product Attributes - Master Cylinder Included: No
Product Attributes - Manufacturer's Part Number: 140-13874
Product Attributes - Rear Rotor Thickness (in.): 1.38
Product Attributes - Rear Caliper Piston Quantity: Six
Product Attributes - Brake Rotor Bolt Pattern (mm): 8 x 165.10mm
Product Attributes - Brake Rotor Bolt Pattern (in.): 8 x 6.50 in.
Product Attributes - Minimum Recommended Wheel Diameter (in.): 20 in.

Reference Information

Brand Name/s	Wilwood
StreetFX SKU	wil140-13874
SFX Item ID	4404406
Supplier Item Code	4404406
Manufacturer SKU	140-13874
Manufacturer UPC	889545071450
Alternative References	tx6r, 15.50in

Compatibility

Application Data

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	HIGH COUNTRY
Beginning Year	2015
Ending Year	2016
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	B

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	HIGH COUNTRY
Beginning Year	2015
Ending Year	2016
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	B

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	HIGH COUNTRY
Beginning Year	2015
Ending Year	2016
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	8

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	HIGH COUNTRY
Beginning Year	2015
Ending Year	2016
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	8

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	HIGH COUNTRY
Beginning Year	2015
Ending Year	2019
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	G

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	HIGH COUNTRY
Beginning Year	2015
Ending Year	2019
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	G

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	HIGH COUNTRY
Beginning Year	2017
Ending Year	2019
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	Y

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	HIGH COUNTRY
Beginning Year	2017
Ending Year	2019
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	Y

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	HIGH COUNTRY
Beginning Year	2019
Ending Year	2019
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	B

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	HIGH COUNTRY
Beginning Year	2019
Ending Year	2019
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	B

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2011
Ending Year	2012
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	L

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2011
Ending Year	2012
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	L

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2011
Ending Year	2016
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	8

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2011
Ending Year	2016
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	8

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2011
Ending Year	2019
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	G

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2011
Ending Year	2019
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	G

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2013
Ending Year	2016
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	B

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2013
Ending Year	2016
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	B

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2017
Ending Year	2019
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	Y

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2017
Ending Year	2019
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	Y

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2018
Ending Year	2019
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	B

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LT
Beginning Year	2018
Ending Year	2019
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Liter	6.0
CID	364
CC	5967
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	B

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LTZ
Beginning Year	2011
Ending Year	2012
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	L

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LTZ
Beginning Year	2011
Ending Year	2012
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	RWD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	L

Make	CHEVROLET
Model	SILVERADO 2500 HD
Submodel	LTZ
Beginning Year	2011
Ending Year	2016
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Duramax diesel V8
Liter	6.6
CID	403
CC	6599
Drivetrain	4WD
Application Notes	Front Brake Type: Disc, Rear BrakeType: Disc. KIT,REAR,GM 2500 HD,2011-2019,TX6R 15.50x1.38 ROTOR,BLACK; RTR:15.50-IN DIA, GT 60 CURVED VANE, SLOTTED; CLPR:TX6R, 6-PISTON, BLACK POWDER COAT Kit will work with both Iron / Steel and Aluminum spindles.
Engine VIN Code	8