Audi S4 3.0 Turbo V6 B9 – Saloon/Sedan & Avant (Non Sport Diff Models) Cat-back (2016 to 2021)

Every Milltek system is designed, developed and hand-finished here in the UK by time-served craftsmen, each one produced in aerospace grade type 304, non-magnetic stainless steel. This superior material is less susceptible to discolouration, lasts almost indefinitely and is used throughout the entire construction of our pipework, silencers and associated hardware.

Mandrel bending ensures constant radius bends for optimised gasflow, and bore diameters are carefully enlarged over stock to ensure ultimate performance without the loss of mid-range torque. All of the Milltek exhaust systems endure a comprehensive acoustic development process to deliver a tone that is sporty and crisp, without ever inducing NVH, drone or cabin resonance.

SKU:SSXAU643

• Type of System:Cat-back
• Detail:Resonated with Quad GT-100 Burnt Titanium Trims EC Approved
• Tip Style:Quad 100mm GT100
• Pipe (mm):63.5
• Pipe (inches):2.5
• EC Approved?:Yes
• ValveSonic?:No
• Res or Non Res?:Resonated (quieter)
• Shipping Info:Ships in 2 boxes. Box 1: 150X 45 X36 at 28kg. Box 2: 130X 40 X30 at 16kg.