2011-2015.5 Chevy GMC 6.6L Duramax LML 4" DPF & CAT Delete w/ Muffler

Constructed from high-durability 409 stainless steel to ensure long-lasting thermal resilience and exceptional corrosion resistance.

Features a high-flow 4.0-inch diameter design that allows for the complete removal of the restrictive factory catalytic converter and DPF filter.

Equipped with a performance-tuned muffler that maintains aggressive exhaust flow while effectively refining the exhaust note to reduce drone.

Proactively eliminates the risk of costly DPF failures and subsequent engine derating, sparing you from expensive, ongoing maintenance repairs.

Optimized for maximum flow, this pipe improves overall engine breathing, helping to boost fuel efficiency by up to 20% under optimal driving conditions.

Compatibility Notice: Exclusively fits models equipped with a V-band clamp connection. Will NOT work for trucks equipped with a 3-bolt flange off the turbo direct pipe.

Designed for off-road and competition use to unlock your LML Duramax's true power potential.

Fits: 2011-2015.5 Chevy Silverado / GMC Sierra 2500HD / 3500HD with 6.6L LML Duramax engines (Does NOT fit Cab & Chassis models).