Duramax 2017+

Performance Allison 1000 transmissions for 2017+ GM Duramax L5P 6.6L. Updated for the L5P platform's revised solenoid and clutch pack configuration. Stage 1 (500hp), Stage 2 (750hp), Stage 3 (900hp competition). Built in NH with billet components, backed by a 2-year unlimited warranty.