Collection: 2007.5-2010 Duramax LMM Exhaust Systems

6.6L Duramax LMM Exhaust

Exhaust systems and race pipes for the 2007.5–2010 GM 6.6L Duramax LMM. A larger-diameter system lowers exhaust gas temperatures and frees airflow as power climbs. Every part is matched to your truck and the rest of your build.

Exhaust

Downpipe-back and turbo-back exhaust in aluminized and stainless, plus Cat & DPF race pipes for off-road and competition use. Larger-diameter exhaust lowers EGT and frees airflow as power climbs.

Compatibility

Organized by confirmed fitment for the 2007.5–2010 GM 6.6L Duramax LMM.

FAQ

What's the difference between downpipe-back and turbo-back exhaust?
A downpipe-back replaces the exhaust from the downpipe rearward; a turbo-back also replaces the downpipe for the freest-flowing setup.

Aluminized or stainless steel?
Aluminized costs less and suits drier climates; stainless resists corrosion and lasts longer, especially where roads are salted.

Are race pipes street legal?
These products are intended for off-road and competition use only. It is the buyer's responsibility to comply with all applicable federal, state, provincial, and local emissions laws.