Unitronic 3.0T Exhaust for B8/B8.5 S4
Unitronic is pleased to present its 2.5” Cat-Back Exhaust System for the B8/B8.5 S4 and S5. Featuring TIG welded T304 Stainless Steel CNC mandrel bent construction, T316 stainless steel flanges, and a straight-through, free flowing design; Unitronic’s Cat-Back Exhaust Systems are designed to remove the factory exhaust restrictions to unleash the full potential of the engine.
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 Cat-Back Exhaust System features a high density, high temperature glass fiber muffler packing, and engraved Unitronic logo. 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” slash cut tips and engraved with the Unitronic logo.
Features / Benefits
Dual 2.5-inch T304 stainless steel:
Top quality material that will not rust and will outlast your vehicle.
T316 stainless steel flanges:
Durable, rust proof and laser cut.
Brushed finish matte finish:
Brushed matte finish for the best possible look.
4-inch Corrugated stainless steel flex section:
High quality flex with interlock construction that will stay leak proof for years; allows engine movement without stressing the factory rubber mounts
Polished 3-inch Double walled exhaust tips:
Mirror polished tips with engraved Unitronic Logo.
Flow-matched transitionsfor maximum performance and airflow.
Integrated X pipe:
Reduce unwanted sound frequency; unique exhaust tone.
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.
Straight-through, free flowing muffler design:
Optimal performance achieved by removing restriction and reducing back pressure.
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.
- Unitronic Left Downpipe Section
- Unitronic Right Downpipe Section
- Unitronic Front Resonator Section
- Unitronic Mid Resonator Section
- Unitronic Left Rear Muffler
- Unitronic Right Rear Muffler
- All Necessary Hardware Included