The assemblies will allow you to release your exhaust to free power. They feature a cast power elbow and stainless steel Monster outlet pipe, both of which will slash backpressure from 40% - 60%. Important Note: Will not work with Banks exhaust brake.Key Features:Power Elbow AssemblyIncl. Banks Power was founded more than 50 years ago, and has since then become widely recognized as a premier designer and manufacturer of power-enhancing products for both diesel and gaspowered light trucks, motorhomes, and sport-utility vehicles.