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 Transmission Gear Oil Additive they all share one thing

they all share one thing in common

1-5/8" mandrel bent primary tubes and 2-1/2" collectors with merge spears for increased exhaust velocity

5:1 (nominal)

Plastic nose support is specifically designed to fit the underside curve of the MD3 Evolution style Dirt Late Model nose piece

At that time the Stainless Steel inlet filter element should be cleaned or replaced as well

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 Transmission Gear Oil Additive they all share one thingDynoMax 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