LMM Duramax Downpipes

Enhance your 2007–2010 LMM Duramax’s performance with high-quality downpipes designed to reduce exhaust backpressure and improve turbo spool. Built from durable stainless steel with precise fitment, these downpipes increase horsepower, torque, and overall engine efficiency. Ideal for towing, performance tuning, or daily driving, our LMM Duramax downpipes deliver reliable power gains and long-lasting durability.