Wilwood TX6R Big Brake Truck Rear Brake Kit
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.
Documents
What's Included
Wilwood's application data lists these main components for this kit:
- Calipers: TX6R, 120-13818-RD / 120-13817-RD
- Rotors: GT 60 Curved Vane, 16" x 1.38"
- Pads: pad type 10120, BP-22 compound, 150-22-10120K
- Hat: 170-13872
Specifications
Fitment
Wilwood's application data for this kit.
| Minimum wheel diameter | 20" |
| Position | Rear Kit |
| Years | Make | Model | Details |
|---|---|---|---|
| 2020-2026 | Chevrolet | Silverado 2500 HD | Custom, Custom |
| 2020-2026 | Chevrolet | Silverado 2500 HD | High Country, High Country |
| 2020-2026 | Chevrolet | Silverado 2500 HD | LT, LT |
| 2020-2026 | Chevrolet | Silverado 2500 HD | LTZ, LTZ |
| 2020-2026 | Chevrolet | Silverado 2500 HD | WT, WT |
| 2025-2026 | Chevrolet | Silverado 2500 HD | ZR2, ZR2 |
| 2020-2026 | Chevrolet | Silverado 3500 HD | High Country, High Country w/SRW |
| 2020-2026 | Chevrolet | Silverado 3500 HD | LT, LT w/SRW |
| 2020-2026 | Chevrolet | Silverado 3500 HD | LTZ, LTZ w/SRW |
| 2020-2026 | Chevrolet | Silverado 3500 HD | WT, WT w/SRW |
| 2020-2022 | GMC | Sierra 2500 HD | |
| 2020-2026 | GMC | Sierra 2500 HD | AT4, AT4 |
| 2020-2026 | GMC | Sierra 2500 HD | Denali, Denali |
| 2020-2026 | GMC | Sierra 2500 HD | SLE, SLE |
| 2020-2026 | GMC | Sierra 2500 HD | SLT, SLT |
| 2023-2026 | GMC | Sierra 2500 HD | Pro, Pro |
| 2025-2026 | GMC | Sierra 2500 HD | AT4X, AT4X |
| 2025-2026 | GMC | Sierra 2500 HD | Denali Ultimate, Denali Ultimate |
| 2020-2022 | GMC | Sierra 3500 HD | Base w/SRW |
| 2020-2023, 2025-2026 | GMC | Sierra 3500 HD | SLT, SLT w/SRW |
| 2020-2026 | GMC | Sierra 3500 HD | AT4, AT4 w/SRW |
| 2020-2026 | GMC | Sierra 3500 HD | Denali, Denali w/SRW |
| 2020-2026 | GMC | Sierra 3500 HD | SLE, SLE w/SRW |
| 2023-2026 | GMC | Sierra 3500 HD | Pro, Pro w/SRW |
| 2025-2026 | GMC | Sierra 3500 HD | Denali Ultimate, Denali Ultimate w/SRW |
Parts in This Kit and Recommended Lines
Frequently Asked Questions
Tap a question to see the answer.
What vehicles does this kit fit?
See the Fitment section above for Wilwood's application list for this kit.
What is the smallest wheel this kit fits?
Wilwood lists a minimum wheel diameter of 20".
Which wheel bolt pattern does it use?
Wilwood lists 8 x 7.09".
What replacement pads does it take?
Pad type 10120. The kit is listed with BP-22 pads, 150-22-10120K.
How much does it weigh?
Wilwood lists the package weight at 132 lb.
Are installation instructions available?
Yes. Wilwood's installation instructions are in the Documents section above.
Not sure this is the right kit for your vehicle? Send us a message.
Always confirm your vehicle, spindles and wheel clearance before you order.
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.