Y-assemblies are needed for vehicles with dual exhaust systems. Y-Assemblies are available in several designs suitable for various types of vehicle exhausts. Y-assembly kits include two hoses, a Y-connector, and two tailpipe adapters. Exhaust-Away offers a variety of Y-assembly kits to fit just about any application due to the different hose and adapter combinations available. As an added bonus, buying hoses and Y-assemblies together helps save on the overall cost rather than buying everything separately.