11-16 Duramax LML Merchant Automotive Allison Maximum "Pro Series" Transmission Rebuild KitOur signature line or Maximum Transmissions builds off the proven reliability of the Allison 1000 used in 2011 to 2016 GM LLY Duramax diesel trucks, but vastly improves the performance by incorporating several key upgrades that will unleash your Allisons true potential. The Pro Series improves the performance of your Duramax with even greater holding capacity with an additional clutch apply area, heavy duty friction material, and additional hydraulic

Also included in each kit are heat-treated

less turbo lag across the whole RPM spectrum

‘13-17 do not anymore (Bully Dog Update)

4 Pinion Design

Performance 55+ Horsepower

Ford years: 2020

Merchant Automotive uses a New injector and then has them updated to our specifications

S&B Air filter Based on factory VGT turbo

Customers asked and we delivered

off roading

The HSP LMM style Cold Air Intake is a perfect for anyone looking to increase

SW # 1 : 40 Hp increase