Audi B9 S4 Quattro 3.0T
2.50" stainless steel with your choice of tip style
Transform your exhaust note
2X Entries Into Our F80 M3 Sweepstakes
This product was last offered at the strikethrough price on
08-17-2026
Lifetime Replacement
The Turbo Systems hybrid turbocharger is an original turbocharger that has been reworked to suit larger compressor and turbine wheels, along with a ball bearing cartridge.
Lifetime Replacement
2.50" stainless steel with quad GT-100 Cerakote black tips
Fits models without factory rear sports differential
For vehicles without a sport differential
This product was last offered at the strikethrough price on
08-17-2026
Lifetime Replacement
2.50" stainless steel with your choice of tip style
Increased volume and surface area, bar and plate cores with end tanks specifically designed to promote even airflow.
Lifetime Replacement
Delivers improved power, sound, and acceleration to B9 Audi S4/S5 owners in a clean OEM+ package!
2X Entries Into Our F80 M3 Sweepstakes
This product was last offered at the strikethrough price on
08-17-2026
Lifetime Replacement
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
This product was last offered at the strikethrough price on
08-25-2026
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
This product was last offered at the strikethrough price on
08-25-2026
Max gains of 16 hp and 3 ft-lbs of torque at the wheels for B9 / 9.5 RS 4 / RS 5 2.9TT (with piggyback tuner)
2X Entries Into Our F80 M3 Sweepstakes
Lifetime Replacement
Swappable swirl generators for 250/500/1000cc configurations!
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
09-05-2026
Lifetime Replacement
Robust protection for your WMI installation to ensure peace of mind
Lifetime Replacement
2.50" stainless steel with quad GT-100 cerakote black tips
Fits models with factory rear sports differential
This product was last offered at the strikethrough price on
08-17-2026
Lifetime Replacement
Engine mounted, stainless steel braided line, 4AN fittings
Lifetime Replacement
The biggest issue with the restrictive factory inlet is apparent when you start to increase the power. CTS engineers designed the turbo inlet to be as large as possible; yet still fit perfectly.
This product was last offered at the strikethrough price on
08-26-2026
Lifetime Replacement
Featuring Milltek Sport Hi-Flow sports cat, fits with OE and Milltek cat-back systems.
This product was last offered at the strikethrough price on
08-17-2026
Lifetime Replacement
