A1 Transmissions
A1 Stage 3 4R100 Transmission (A1-S3-TC-4R100-7.3L) for 1999-2003 Powerstroke 7.3L
This A1 Transmission build features billet internal components, Gen2 Blue frictions, Kolene steels, and a custom Precision Industries torque converter for maximum strength and smooth power delivery. Available in 2WD or 4WD configurations and backed by a 2-year unlimited mileage warranty against build defects and workmanship.
A1 Stage 3 E40D Transmission (A1-S3-TC-E40D-FORD-7.3L) for 1989-1998 Powerstroke 7.3L OBS
The A1 6R140 Stage 2 Transmission for 2011+ Ford F-250/F-350 is built to handle 1,000+ horsepower with upgraded billet components for added strength and reliability. Featuring a billet intermediate shaft and hub, welded input hub, cast aluminum pan, and an A1-spec billet cover quad disc torque converter, this transmission is designed for high-performance street, towing, and heavy-duty applications. Backed by a 2-year unlimited mileage warranty against build defects and workmanship.
A1 Stage 2 6R140 Transmission (A1-S2-TC-6R140-Ford-6.7) for 2011-2025 Powerstroke 6.7L
$11,000.00The A1 6R140 Stage 2 Transmission for 2011+ Ford F-250/F-350 is built to handle 1,000+ horsepower with upgraded billet components for added strength and reliability. Featuring a billet intermediate shaft and hub, welded input hub, cast aluminum pan, and an A1-spec billet cover quad disc torque converter, this transmission is designed for high-performance street, towing, and heavy-duty applications. Backed by a 2-year unlimited mileage warranty against build defects and workmanship.
A1 Stage 3 10R80 Transmission (A1-S3-10R80-Ford-3.0L) for 2017-2025 Powerstroke 3.0L
The A1 10R80 Stage 3 Transmission is rated for up to 1,000 HP and built for high-performance durability, smooth shifting, and heavy-duty use. Featuring premium friction materials, upgraded valve body components, reinforced clutch packs, a custom torque converter, and an oversized pan, this transmission is ideal for demanding street, towing, and performance applications. Core required.
A1 Stage 3 10L1000 Transmission (A1-S3-GM-10L1000) for 2017-2025 Duramax
Rated for up to 800+ horsepower, the A1 GM 10L1000 Stage 3 Transmission is built for high-performance durability and reliable operation under heavy load. Featuring premium internal upgrades, a fully rebuilt valve body, and a Goerend billet triple disc torque converter, this transmission is engineered to handle increased torque for demanding street, towing, and performance applications.
At this time we will need your core to build.
A1 Stage 3 RAM 68RFE Transmission (A1-S3-68RFE-TC-RAM-6.7L) for 2007.5-2025 Cummins 6.7L
Rated for 1,000+ horsepower, the A1 Ram 68RFE Stage 3 Transmission is built for extreme durability and consistent high-performance operation. Featuring premium internal upgrades, billet components, and a billet triple disc torque converter, this transmission is engineered to handle heavy loads, high torque, and aggressive driving. Designed for reliability in demanding applications, it’s an ideal upgrade for performance street trucks, towing, and high-horsepower builds.
A1 Stage 3 5R110 Transmission (A1-6.0L-S3-5R110-TC) for 2003-2007 Powerstroke 6.0L
The A1 Transmission Stage 3 Build for the 5R110 (2003–2010 Ford F-250/F-350) is engineered to support 1,000+ horsepower with the strength and reliability required for extreme use. It includes all Stage 1 and Stage 2 upgrades, along with a billet output hub, upgraded MTS solenoids, and an A1-spec billet cover triple disc torque converter for improved torque handling and precise shifting. Built for high-performance street, towing, and competition applications, this transmission is available for 2WD and 4WD configurations and is backed by a 2-year unlimited mileage warranty against workmanship and build defects.
