DNA Exhaust for Chevy Silverado & GMC Sierra 2500HD/3500HD 6.6L (2001-2007) Catback with or without Muffler

Fitment Information

• Chevy Silverado & GMC Sierra 2500HD/3500HD 6.6L (2001, 2002, 2003, 2004, 2005, 2006, 2007) 

Specs & Features

• Tip Option: Polished Tip
  
• Inlet / Outlet Diameter: 4.0" OD 
• Tip Diameter: 5.0" OD
• Material: Premium T-304 stainless steel for long-lasting strength and corrosion resistance.
  
• Mandrel Bends: CNC mandrel-bent piping ensures smooth airflow and maximum exhaust velocity.
  
• Construction: TIG-welded, CNC flanges deliver tight seals and durability under pressure.
  
• Sound: Deep, aggressive tone—throaty at throttle, smooth while cruising, no harsh rasp.
  
• Performance: Dyno-proven improved torque and throttle response. Aggressive, deep, and smooth tone while ensuring smooth exhaust gas flow, increasing engine output, and efficiency.
• Fitment: Includes gaskets and hardware for an effortless, bolt-on or clamp-on installation.
  

Standard Warranty

All DNA Motoring products come with a 30-day limited manufacturer’s warranty covering defects in materials and workmanship under normal use. This warranty does not cover wear and tear, misuse, or improper installation.

⚠️ Extend Product Protection Recommended
To ensure peace of mind and protect your investment long-term, we strongly recommend purchasing an Extend product protection plan available during checkout. Extended coverage can offer added security & support beyond the standard 30-day warranty period.