Our manifolds will increase exhaust flow providing not only instant power gains, but also allowing for more power in the future. ---Manufactured from highest quality T304 grade stainless steel ---Mandrel bent and fully TIG welded for strength and durability ---Free flowing 4 - 2 - 1 tubular branches with limited restriction ---Designed to fit the OEM and most aftermarket exhaust systems ---Fully polished to complement the legendary high revving F series engine Compatible with: ---Honda S2000 AP1 AP2 F20 & F22 engine 1999-2009 models. Please note: The OEM heat shield is not compatible with this manifold.