OEM catalysts are often very dense and restrictive to gas flow. The Milltek Hi-Flow Sports Catalysts reduce restriction compared to OE catalysts, allowing for a free-flowing exhaust system to improve engine performance. - Reduces restriction over OE catalysts - Allows for improved exhaust gas flow - Designed for enhanced engine performance Specifications: - Pipe Diameter: 69.85 - Race Product: Yes - EMarked: No Kit comes with: - 200CPSI Hi-Flow Sports Catalyst Assembly - MSVW284 - Link Pipes for Milltek Cat-Back System - MSVW285REP - LH Link Pipe to OE Manifold - MSVW286LH - RH Link Pipe to OE Manifold - MSVW286RH Vehicle Compatibility: - 2005-2009 Volkswagen Golf MK5 R32 3.2 V6