A1 Stage 2 6R140 Transmission (A1-S2-TC-6R140-Ford-6.7) for 2011-2025 Powerstroke 6.7L

A1 Stage 2 6R140 Transmission Overview

The A1 Stage 2 6R140 transmission handles extreme power while maintaining reliability and smooth operation in demanding applications. This transmission supports builds producing 1,000 horsepower or more and builds on all Stage 1 upgrades. At the same time, it adds reinforced and billet components designed to manage high torque output.

Internal Upgrades and Reinforcements

To address common failure points, this build includes a billet intermediate shaft and hub along with a welded input hub for increased strength. In addition, a cast aluminum transmission pan improves durability while increasing overall fluid capacity for sustained performance under load.

Torque Converter and Power Delivery

Additionally, an A1-spec billet cover quad disc torque converter manages power transfer with smooth and consistent engagement. Customers can choose stock or low stall options to match driving style and performance needs. For standard-duty applications, a Goerend torque converter rated for up to 800 horsepower provides reliable engagement and predictable power delivery.

Applications and Warranty

Finally, this transmission fits 4WD configurations and works well for high-performance street trucks, towing applications, and heavy-duty builds. A1 backs each unit with a 2-year unlimited mileage warranty covering build defects and workmanship.

This transmission is a strong match for high-power 6.7L Powerstroke performance builds.