4" Cat Back Single | 2001-2007 GM 2500/3500 6.6L DURAMAX w/OEM 4 Bolt Flange

Constructed out of 16 gauge aluminized steel or T409 Stainless, this exhaust system is designed to simplify installation with included clamps, preweld contour bends and improved flanges. Enjoy a noticeable boost in performance, lowered EGTs and amplified air flow with this Mel's system. For powerhouse performance, Mel's delivers - horsepower you can hear!

• Ease of installation
• Contour Bent Hangers
• TorcTite® Clamps
• Retains for Cat for Emissions
• OEM Style 4 Bolt Flange
• No Bungs
  
• Fits Cab/Box Configurations: EC-CC/SB-LB-Dually

These parts are for use on non-registered race vehicles on closed-course competition events *Installing or using this part on any emission-controlled vehicle ("street" or "off-road") may violate federal and/or state emissions laws and regulations. *Not available to ship to the United States