
Cat-Back Exhaust
Milltek Resonated Cat-Back Exhaust | Lexus GX 550 3.4 Turbo V6 - Burnt Titanium TipsMilltek

Cat-Back Exhaust
Brand: Milltek
Part #: SSXAU856
SKU: MK-SSXAU856
The Milltek Road+ Cat-Back Exhaust is engineered for the Audi B9 RS4 Avant and RS5 Sportback (2018-2019, non-GPF models). Direct factory fitment using OEM hangers-no modification required. Constructed from T304L stainless steel with mandrel-bent 2.76" (70mm) piping, the Road+ delivers a mid-range sound character that balances resonance control with full-throttle presence. Hand-finished polished oval tips. The system replaces the factory cat-back assembly and integrates seamlessly with OEM secondary cats and valved systems. Fitment • Audi B9 RS5 Sportback (2018-2019) • Audi B9 RS4 Avant (2018-2019) • Non-GPF models only Specifications • Pipe Diameter: 2.76" (70mm) mandrel-bent • Material: T304L stainless steel • Finish: Hand-finished, polished oval trims • Type: Cat-back system (turbo-back compatible) Dyno-proven performance gains with engineered tone tuning. Milltek exhausts are developed and tested to deliver both measurable power and refined acoustic character-engineered to exhilarate. Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Cat-Back Exhaust
Milltek Resonated Cat-Back Exhaust | Lexus GX 550 3.4 Turbo V6 - Burnt Titanium TipsMilltek

Cat-Back Exhaust
Milltek Resonated Cat-Back Exhaust | Lexus GX 550 3.4 Turbo V6 - Brushed Titanium TipsMilltek

Cat-Back Exhaust
Milltek Resonated Cat-Back Exhaust | Lexus GX 550 3.4 Turbo V6 - Cerakote Black TipsMilltek

Cat-Back Exhaust
Milltek Resonated Cat-Back Exhaust | Lexus GX 550 3.4 Turbo V6 - Polished TipsMilltek