The Revo Zircotec Intake Pipe is designed as the ideal supporting mod for those tuners aiming for incredible power gains. The stock airbox and intake is great for OE power levels, but nothing compares to the smoothness of this intake pipe which removes any restrictions and rough edges.Comes with silicone couplers4-inch internal diameterExcellent thermal performanceAs the title suggests, this is no ordinary silicone hose kit. This intake pipe is coated in the Zircotec ceramic/metal hybrid mixture perfect for regulating those extreme engine temperatures. Zircotec has an excellent thermal resistance and insulates the pipe all around keeping your airflow significantly cooler than the rest of your engine bay.The three-ply constructed hose and couplers, with added fluorine, offer increased strength and protection from collapsing under pressure and feature internal steps to fit flush against the stock airbox and turbo inlet. All together this creates a smooth transition between components ens