DynoMax Ultra Flo Cat-Back Exhaust System - 2-1/2 in Diameter - Dual Rear Exit - 4 in Polished Tips - Mopar Gen III Hemi - Ram Fullsize Truck 2009-14 1311111 Assembly must be balanced by

Assembly must be balanced by qualified machine shop before use

They simplify measuring piston-to-valve clearance and rocker ratio

130 / 250 lb/in Springs

2006-2006 GMC Envoy

NDPR forged billet

DynoMax Ultra Flo Cat-Back Exhaust System - 2-1/2 in Diameter - Dual Rear Exit - 4 in Polished Tips - Mopar Gen III Hemi - Ram Fullsize Truck 2009-14 1311111 Assembly must be balanced byDynoMax Stainless Steel Cat Back Exhaust System 39480 2. 5 in. Dual System Dual Split Rear Exit Includes Ultra Flo Polished Muffler 4 in. Dual Polished Stainless Steel Tips 50 State Legal Mandrel Bent Stainless Steel Tube Stainless Steel Ultra Flo+ Muffler 90 Day Performance And Sound Guarantee Limited Lifetime Warranty Polished finish for a show quality shine Dyno proven to flow up to 2,000 SCFM and support up to 1,900 horsepower Straight through