The AEM Charge Pipe is a free-flowing, mandrel-bent aluminum tube charge pipe kit designed to replace the restrictive factory charge pipe on specific turbo charged Subaru 2015+ WRX models. The AEM charge pipe has been engineered to reduce turbo charged air pressure loss as well as dramatically increase air flow from the turbo to the intercooler. The specialized aerodynamic tube design produces a noticeable horsepower and acceleration gain from your engine. The tube also features a fitting that can accommodate the factory or any other after-market diverter valve or blow-off valve. This allows you to choose the type of valve that will give you the specific boost performance, blow-off acoustics and under-the-hood style to fit your needs. The charge pipe is constructed from lightweight aluminum with a durable gunmetal gray powder coated finish. For additional horsepower gains and improved engine compartment aesthetics, the AEM Cold Air Intake System can be installed into your vehicle as well. The charge pipe kit is easy to install with commonly available tools and it is backed by AEM's Lifetime Limited Warranty. Some AEM charge pipe kits are not legal for sale or use in California and other states adopting California emission standards, while others are 50 state legal.