Banks Monster 4" Down-Pipe Back Single Exit Exhaust, Chevy/GMC (2001-04) 6.6L Duramax CC/EC LB, Aluminized off road

With nearly five decades of engineering airflow improvements, Banks has mastered the art of maximizing flow while minimizing backpressure. The polished straight-through Monster Muffler, mandrel-bent head pipe assembly (non-cat-converter-equipped vehicles only), intermediate pipe(s) and tailpipe nearly triple the exhaust flow, cut backpressure up to 98%, lower exhaust gas temps and deliver more power to the ground. And the 5” polished rolled-edge tip has a double-walled design with a ½” air gap to keep heat from tarnishing the mirror finish.

Many straight-through mufflers deliver an obnoxious drone that overpowers conversations. Banks Monster Muffler is extensively sound-tested and engineered with a unique expansion chamber and high-temperature packing. Instead of a drone, you’re treated to a rich exhaust note that’s authoritative, yet civil. It sounds as great as it looks!

This of road kit doesn't retain the cat converter.