2011-2016 Duramax LML 6.6L Up-Pipes

Aftermarket up-pipes for your 2011-2016 GM 6.6L Duramax LML are designed to replace the restrictive factory up-pipes on your truck to deliver improved power and performance in every situation. These aftermarket up-pipes were engineered to lower Exhaust Gas Temperatures (EGTs) and maximize airflow which results in a boost in both horsepower and torque for your 2500/3500 GM truck. Perfect for those looking to add-on even more performance upgrades in the future, these high-quality up-pipes help reduce back-pressure for consistent and reliable performance in every scenario. GM Duramax Fitments: 2011, 2012, 2013, 2014, 2015, 2016 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.