Wilwood's Tactical Extreme TX6-DM Direct Mount Big Brake rear kits are ultimate in braking performance for Truck, SUV and Armored Vehicles. Using TX6-DM direct mount six-piston calipers and massive 15.50” GTB grooved 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. TX6-DM rear kits replace the factory disc brakes and use the OE parking brake assembly as a compliment to front big brake upgrades. Kits include all the necessary hardware to complete the installation. Braided stainless steel flex lines are included for most applications.