Designed to replace the factory flattened and restrictive original turbo downpipe coming off the turbocharger outlet and the factory installed crossover pipe. The Turbo downpipe is constructed from large 3.00-inch mandrel-bent 16 gauge aluminized steel for maximum flow and includes a factory style turbo flange for a direct-fit. The crossover pipe is constructed from 2.50-inch mandrel-bent aluminized steel and has factory style 3-bolt flanges for a trouble free install and precise fit. The kit includes all necessary hardware and instructions for an easy installation you can do at home