Milltek Sport exhaust systems are engineered for enthusiasts who seek the perfect blend of performance, sound, and quality. Each OPF/GPF bypass system combines precise engineering with durable materials for a perfect fit and finish. Manufactured in the UK from aircraft-grade 304L stainless steel, every component ensures exceptional strength and corrosion resistance. Milltek creates exhaust systems that enhance the vehicle’s appearance while delivering a deep, powerful tone. Specifications - Pipe diameter (inches): 3.15 - EC-Approved: No - Feature 1: Fits to Milltek Axle Back and OE Downpipes Only - Feature 2: (UK/European Spec Vehicles) - Feature 3: Requires ECU Coding or Remap