Wilwood Front Brake Conversion for GM 2500/3500 HD and Suburban HD, Red TX6R with 15-Inch Rotors — Selected 2011–2019 Applications

For the listed GM HD front axle, this kit combines red TX6R calipers with 15.00 by 1.50-inch rotors. It replaces the specified factory disc hardware while retaining the original hub assembly. Established in 1977 by Bill Wood, Camarillo, California-based Wilwood Engineering designs and manufactures disc brake systems. Its master cylinders, calipers, brake rotors, lines, fittings and valves support motorsport, street-performance and specialized applications, with each component selected for its role in the complete brake system.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-13873-R
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• Minimum wheel guidance (clearance drawing required): 20 in; 508 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: No
• Pistons per service caliper: 6
• Service-caliper piston construction: Stainless
• Service-caliper mount: Radial
• Caliper body construction: Forged aluminum
• Caliper Color: Red
• Caliper Finish: Red Powder Coat
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: TX6R
• Pad compound: BP-22
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: Yes
• Rotor Outside Diameter: 15.00 in; 381 mm
• Rotor Thickness: 1.50 in; 38.1 mm
• Rotor Material: Spec-37 Iron
• Surface Type: GT Slotted
• Rotor construction: Vented
• Bolt Circle Diameter: 8 x 7.09 in; 8 x 180.09 mm
• Catalog stud / mounting-hole reference: 0.640 in; 16.26 mm
• Rotor surface finish: Black Electro Coat
• Hat material: Aluminum
• Hat finish: Black E-Coat
• Hat offset dimension: 1.920 in

Fitment & Compatibility

Use the individual year, model and wheel-configuration entries below: the 2500 HD, 3500 HD and Suburban 3500 HD listings do not all share the same production range. Wilwood permits the specified iron/steel or aluminum spindle, but hub pilot, eight-lug pattern and wheel clearance still need checking. DS-1085 identifies front flexline kit 220-10979 as included; confirm its length, fittings and routing on the actual vehicle.

Listed models: Silverado 2500 HD; Silverado 3500 HD Pickup; Sierra 2500 HD; Sierra 3500 HD Pickup; Silverado 3500 HD; Sierra 3500 HD; Suburban 3500 HD. Use the fitment table below for the individual years, submodels and equipment conditions.

Wilwood product specifications · Installation instructions

PMB Performance can help identify the required brake component with over 20 years of parts experience. Send the kit details and original-part measurements.