SCS 4" Cat Back Exhaust System With Muffler, No Bungs

For 2011, 2012, 2013, 2014, 2015 GM 6.6L Duramax LML 2500/3500

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.