Description
Large Bore-HD 4" 409 Stainless Steel Cat-Back Exhaust System
Engineered for maximum performance and durability, the Large Bore-HD 4" Cat-Back Exhaust System is designed to excel in even the most demanding environments. Crafted from high-quality 409 stainless steel with mandrel-bent tubing, this system ensures optimal exhaust flow, delivering increased horsepower, enhanced torque, and reduced exhaust gas temperatures (EGTs) for superior engine efficiency.
Complete System Options:
The Large Bore-HD exhaust is available as a full 4" cat-back system with a high-performance muffler, a muffler delete pipe, and a polished stainless steel tip—offering both aggressive styling and unmatched versatility.
Easy, Bolt-On Installation:
Engineered to utilize factory mounting locations, installation is fast, secure, and hassle-free. OE-style bayonet hangers maintain pipe stability under high vibration and heat, ensuring a perfect fit that lasts over time.
Leak-Free Performance:
High-quality OE-style band clamps create a complete 360° seal, eliminating exhaust leaks and ensuring long-term reliability.
Aggressive, Tuned Sound:
A 24" free-flowing muffler reduces high-pitched tones while producing a powerful, race-inspired exhaust note. For those seeking maximum flow and a true performance sound, a muffler delete pipe is also included.
Optimized Flow & Durability:
Mandrel-bent tubing and smooth transition bends minimize turbulence, improving exhaust flow and maximizing engine output. Built with 4" 409 stainless steel, this exhaust system provides long-lasting corrosion resistance and high-temperature durability.
Emissions Compliance:
This product does not require a CARB Executive Order (EO#), making it a compliant choice for off-road and performance applications.
Made in the USA:
All Large Bore-HD exhaust systems are precision-engineered and manufactured at our Corona, California facility to ensure superior quality and performance.
Vehicle Fitment:
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2006-2007 Chevrolet Silverado 2500 HD Diesel V8-6.6L (Duramax)
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2006-2006 Chevrolet Silverado 3500 Diesel V8-6.6L (Duramax)
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2007 Chevrolet Silverado 3500 HD Diesel V8-6.6L (Duramax)
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2006-2007 GMC Sierra 2500 HD Diesel V8-6.6L (Duramax)
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2006 GMC Sierra 3500 Diesel V8-6.6L (Duramax)
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2007 GMC Sierra 3500 HD Diesel V8-6.6L (Duramax)
