Firepunk

It's stupid-easy to get your full-size diesel truck immense levels of horsepower and torque, but you're going to need to a transmission that can handle it. FirePunk diesel's lineup of high-performance crate transmissions will let your diesel hold and handle extreme levels of power without letting you down. Firepunk has Duramax transmission and Cummins transmissions that are rated for huge power and torque which lets you stack on tuning and performance parts to your hearts content. These transmissions drop right into place of stock and come with everything you need to get them up and running on your aggressive truck of choice.