Valair Allison 1000 TransGo Performance Kit

High-performance TransGo Allison performance kit for the Allison 1000 transmission in Duramax diesel trucks. Engineered by Valair with shift improvement for towing to handle increased power from performance tunes, turbo upgrades, and heavy towing applications. The Allison 1000 is a strong platform that responds well to quality performance upgrades.

Designed for 2001-2019 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD. Valair is a trusted name in Duramax and Allison performance, providing proven components used by diesel performance enthusiasts and commercial operators nationwide.