The Milltek Cat-Back exhaust system is perfect for those looking to enhance the sound and appearance of their vehicle. It allows drivers to choose their preferred volume level and achieve a more aggressive exhaust tone. All components are made from 304L Aircraft Grade stainless steel, providing exceptional strength and durability even under harsh conditions. Specifications - Pipe diameter (inches): 2.5 - EC-Approved: No - Tips: GT-90 Cerakote Black - Feature 1: Valved - Feature 2: Re-uses OE Valve Motors - Feature 3: Requires additional OE Clamp and Bolt from Mercedes 2 x A 203 490 06 41 / 2 x N 910143 008006)