Upgrade your Duramax L5P with high-flow stainless steel up-pipes. Increased exhaust flow, lower EGT, and a robust design to withstand high temperatures and pressures.
These upgraded up-pipes are a direct replacement for the OEM ones on Chevy Silverado and GMC Sierra 2500HD/3500HD 6.6L L5P (2017–2021). Built from stainless steel with internally reinforced bellows, they provide significantly improved durability and increased exhaust flow.
The result is lower exhaust gas temperatures (EGT), better response, and reliable operation even under heavy loads – perfect for both towing and performance tuning.
Specifications:
Material: Stainless steel
Design: OEM length, high-flow
Function: Lowers EGT, increases flow, withstands high pressure and temperature
Fits:
2017–2021 Chevy Silverado 2500HD/3500HD 6.6L Duramax L5P
2017–2021 GMC Sierra 2500HD/3500HD 6.6L Duramax L5P
Benefits:
Improved exhaust flow and performance
Lowers EGT under load
Stainless steel construction for long life
Direct bolt-on replacement, easy installation
