2017 - 2023 GM 6.6L L5P Duramax | Transmission Tuning by PPEI Chieftain Premium boot - QTY 4

Premium boot - QTY 4

You can get exactly what you want for your riding style and preferred riding environment

temperature

back pressure and look just right

2016 Maverick - Maverick MAX - 1000R Efi

2017 - 2023 GM 6.6L L5P Duramax | Transmission Tuning by PPEI Chieftain Premium boot - QTY 4Extend your L5P Duramax's transmission's life and increase your fuel economy with PPEI's T87A T93 Transmission tuning! A MUST for tuned trucks with additional torque. PPEI was the first to offer transmission tuning for these new allisons and we have not let off the throttle since! The refined shift points get rid of the low rpm Lazy feel these trucks have that force the driver to stab the throttle for a downshift not cool and a fuel economy killer!