Banks Power 04-05 GM 8.1 Mh-W20/22 (R-Exit) PowerPack System

The Banks PowerPack system starts with a stainless-steel, tuned-length TorqueTubes exhaust manifold design. This isn't just about making noise; these manifolds are crafted to optimize exhaust pulse scavenging, which directly translates to improved torque output right where you need it for a heavy motorhome. This system is built for the 2004-2010 GM Class-A Motorhome with the 8.1L engine, specifically for W20/W22 chassis with a right-side tailpipe exit.

Beyond the manifolds, this PowerPack bundle includes a Banks Ram-Air Cold-Air Intake System, designed to pull cooler, denser air into the engine for better combustion and more power. You also get the Banks Monster Exhaust System, which is engineered to reduce backpressure, further enhancing airflow and performance. Together, these components are shown to deliver significant gains of up to +70 horsepower and +92 lb-ft of torque at the rear wheels, all while potentially improving fuel economy and without requiring high-octane fuel. The package also includes a chrome tailpipe, heat shields, and all necessary hardware for installation, making it a comprehensive upgrade.

It's important to note that while the Ram-Air intake is specifically for W-Series chassis, P-series chassis with wheelbases over 190 inches will require an extension kit for proper fitment. This system is not CARB approved and cannot be shipped to California. This is a substantial upgrade designed to make passing, merging, and climbing hills a much more comfortable experience for your motorhome.