Milltek Audi A4 1.8T B6 quattro 163BHP (5 speed) 01-05 Catback Exhaust SSXAU509. Milltek Performance Upgrade To Suit. Variant: 1.8T B6 quattro Saloon - Avant 163BHP (5 speed).Notes: Non-resonated (louder) with 90mm GT90 detachable trims. Bore Size (MM): 63.5. Bore Size (Inch): 2.5. Exhaust Tip Style: Dual 90mm GT90. This item is in the category "Vehicle Parts & Accessories\Car Parts & Accessories\Exhaust & Emission Systems\Exhaust System Kits". The seller is "advantage-motorsport" and is located in this country: GB. This item can be shipped to all countries in Europe.