Made in the USA and engineered to last, for those seeking increased performance and better economy, MagnaFlow MF Series Performance Exhaust systems deliver the smooth deep sound you want and the wide-open performance power you need. Our exhaust systems feature straight-through flow designs for the ultimate in unrestricted horsepower and torque for big power while maintaining exhaust efficiency. These systems are an engineered balance of interior and exterior noise levels and are tested against SAE j1169 standards. PartNumber : mag15121 Description : SYS C/B 2011 Silverado/Sierra 6.2L Main Piping Diameter : 2.5 Material : Stainless Series : MF Anticipated Ship Out Time : Approximately 1-2 Days Attachment Style : Clamp-On Color/Finish : Stainless Exhaust Inlet Connection Type : Clamp-On Exhaust Pipe Material : Stainless Muffler Quantity : 1 Muffler Body Height : 5 Muffler Body Width : 11 Muffler Body Length : 22 Muffler Body Diameter : 5 x 11 Muffler Body Material : Stainless Muffler Body Finish : Polished Muffler Body Shape : Oval Muffler Configuration : Offset/Center Sound Level : Moderate Exit Location : Single Passenger Side Rear Exit Quantity : Single Recommended Use : Performance System Type : Cat-Back Tip Type : Rolled Edge;Double Wall;Angle Cut Tip Diameter : 4 Tip Finish : Polished Tip Length : 12 Tip Material : Stainless Tip Quantity : 1 Tip Shape : Round Warranty : Lifetime Components : Band Clamp=3 Muffler Sound Level : Moderate Muffler Overall Length : 27.75 Muffler Inlet Diameter : 3.5 Muffler Outlet Diameter : 3.375 Muffler Type : Straight-Through Exhaust Type : Single Exit Position : Single Side Exit Style : Turn Down Finish : Stainless Steel Inlet Size (in.) : 3.5 Main Piping Diameter (in.) : Stainless Material : Stainless Steel Muffler Body Diameter (in.) : 5 x 11 Muffler Body Length : 22 in. Muffler Body Material : 429 Stainless Muffler Count : 1 Outlet Size (in.) : 4 System Type : Cat Back Tip Diameter (in.) : 4 Tip Size : 4.0 in. Attachment Type : Clamp-On Inlet Connection Type : Clamp-On Inlet Inside Diameter (in.) : 3.5 Muffler Body Height (in.) : 5 Muffler Body Length (in.) : 22 Muffler Body Width (in.) : 11 Muffler Inlet Diameter (in.) : 3.5 Muffler Outlet Diameter (in.) : 3.375 Muffler Overall Length (in.) : 27.75 Outlet Outside Diameter (in.) : 4 Tip Length (in.) : 12 Title : Cat Back Tubing Diameter : 2.50 in. WARNING CA Proposition 65 : No California Proposition 65 : WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov Muffler Body Width : 11.000 in. Muffler Inlet Diameter : 3.500 in. Muffler Outlet Diameter : 3.375 in. Outlet Outside Diameter : 4 Main Piping Diameter : 3.5 Tip Type : Rolled Edge Inlet Inside Diameter : 3.500 in. Tip Length : 12.000 in. 2011-2013 Chevrolet Silverado 1500 LT V8.-cc Exhaust, Mufflers & Tips::Catback 2011-2013 Chevrolet Silverado 1500 LT V8.6162cc Exhaust, Mufflers & Tips::Catback 2011-2013 Chevrolet Silverado 1500 LTZ V8.-cc Exhaust, Mufflers & Tips::Catback 2011-2013 Chevrolet Silverado 1500 LTZ V8.6162cc Exhaust, Mufflers & Tips::Catback 2011-2013 GMC Sierra 1500 Denali V8.-cc Exhaust, Mufflers & Tips::Catback 2011-2013 GMC Sierra 1500 Denali V8.6162cc Exhaust, Mufflers & Tips::Catback 2011-2013 GMC Sierra 1500 SLE V8.-cc Exhaust, Mufflers & Tips::Catback 2011-2013 GMC Sierra 1500 SLE V8.6162cc Exhaust, Mufflers & Tips::Catback 2011-2013 GMC Sierra 1500 SLT V8.-cc Exhaust, Mufflers & Tips::Catback 2011-2013 GMC Sierra 1500 SLT V8.6162cc Exhaust, Mufflers & Tips::Catback