Description Unitronic is pleased to present its 3-inch Performance Cat-Back Exhaust System for the 8V Audi A3. Like all of Unitronic’s Performance Exhaust Systems, a unique v-band fastener system, using T316 Stainless Steel flanges was utilized to ensure a leak proof connection every time. This is achieved through a locking ring on all Unitronic v-band flanges to guarantee a centric alignment of the two flanges. Unitronic’s mufflers feature a high density, high temperature glass fiber packing and are stamped with the Unitronic logo with a straight-through, free flowing muffler design. These attributes combined ensure maximum performance, while maintaining a comfortable and unobtrusive tone inside the cabin. Exiting at the rear, exhaust gasses pass through dual 3.5" Double Wall Polished Exhaust Tips with Engraved Unitronic Logo. Features / Benefits Direct Bolt-On Fitment with OEM mounting locations:To ensure a seamless direct bolt-on upgrade T304 Stainless Steel Tubing: Top quality material that will not rust and will outlast your vehicle. T316 Stainless Steel Flanges:Durable, rust proof and laser cut. TIG Welded Construction: Professionally TIG welded to ensure longevity, durability and top tier craftsmanship. Unique V-Band Fastening System Featuring Clampco® clamps: Maintain a perfect alignment of v-band flanges while ensuring a leak-proof connection every time. Fully reusable and quick to install. Straight-through, free flowing muffler design: Optimal performance achieved by removing restriction and reducing back pressure. Sound Absorption Technology:Perforated chamber packed with high quality and durable high temperature fiberglass wool; ensures a deep tone while absorbing unwanted frequency. Sound Reflection Chamber Technology:Sound reflection chamber used to cancel unwanted sound frequency to ensure a deep tone. Double Wall Polished Exhaust Tips with Engraved Unitronic Logo:For the best high-end look. Embossed Unitronic Logo:All mufflers and resonators are embossed with Unitronic Logo. Unitronic Life Time Warranty:Unitronic Performance Hardware Products carry a Limited Lifetime Warranty Hardware Included Unitronic 3" Reducer to OEM size section Unitronic 3" Mid-Pipe w/ Resonator Unitronic 3" Rear Section w/ Muffler Unitronic 3" V-Band Exhaust Clamps Unitronic 3" V-Band Sealing Rings Recommended Software Stage 1 Stage 1+ Stage 2 (If equipped with Unitronic's 3'' Downpipe) Stage 2+ Install Featuring a unique v-band fastening system and engineered using the latest in 3D modeling technology, Unitronic Performance Exhaust Systems are made easy to install. Unitronic is a leader in Performance Software and Hardware for VW, Audi and Porsche. UroTuning is proud to be a top dealer for Unitronic offering their highly sought after tunes and premium quality performance parts. We literally Delivery the Power and offer Flash at home software with Unitronics Uniconnect Cables.