Diamond Eye K4129A 4 Inch Aluminized Turbo-Back Exhaust System 2007.5-2010 Chevy/GMC 6.6L Duramax LMM

The Diamond Eye K4129A is a complete 4-inch aluminized steel turbo-back exhaust system engineered specifically for 2007.5-2010 Chevrolet and GMC 2500/3500 trucks equipped with the 6.6L LMM Duramax diesel engine. This universal-fit system accommodates all cab configurations and bed lengths, providing a comprehensive exhaust solution that maximizes performance and efficiency.

Key Features:

• 4-inch mandrel-bent aluminized steel construction for smooth, unrestricted exhaust flow
• Turbo-back design replaces restrictive factory exhaust from turbo outlet to tailpipe
• Precision CNC mandrel bending ensures consistent diameter throughout for maximum flow
• Universal fit for all 2007.5-2010 Duramax LMM cab and bed configurations
• Aluminized steel finish provides excellent corrosion resistance and durability
• Engineered to reduce exhaust gas temperatures (EGTs) and improve throttle response
• Complete bolt-on installation with all necessary hardware included

Diamond Eye's mandrel-bent construction maintains consistent pipe diameter through every bend, eliminating the crimping and flow restrictions found in crush-bent exhaust systems. This results in improved exhaust scavenging, reduced backpressure, and noticeable gains in horsepower and torque. The 4-inch diameter provides ample flow capacity for stock and modified Duramax engines, while the aluminized steel construction offers a cost-effective alternative to stainless steel with excellent longevity.