Designed to replace the factory flattened and restrictive OEM turbo downpipe coming off the turbocharger outlet and the factory OEM crossover pipe. The Turbo downpipe is constructed from large 3.00 in. mandrel-bent 16 gauge aluminized steel for maximum flow and includes a OEM style turbo flange for a direct-fit. The crossover pipe is constructed from 2.50 in. mandrel-bent aluminized steel and has OEM 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.