The IE 304L Stainless system features a massive 3.5" straight-through center pipe that splits to dual 3" pipes out the back with the valves open - This is enough flow to power even the largest turbo setups!
*To be used with IE downpipe IEEXCQO1 / ES3677700 (Does not include Y-pipe adapter to mate with factory downpipe)
Replaces the restrictive secondary midpipe - Fits both OE and Milltek Sport systems
*** Not all vehicles come equipped with secondary cats, visual check recommended before ordering ***
T304 stainless-steel construction with dual 2.5" mandrel-bent brushed tubing with quad 2.5" outlets in dual 170x112mm ovalized tips
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Brand:
ES#:
4659031
Mfg#:
CBK0041
Ships in 6 Business Days
ON SALE!
SAVE 10%
$2254.99
This product was last offered at the strikethrough price on 09-28-2026
Offers increased horsepower and torque throughout the powerband *(+ 178 HP / + 179 TQ), reduced turbocharger lag, and an enhanced exhaust note - This is the ultimate downpipe solution for the discerning Audi enthusiast!
2X Entries Into Our F80 M3 Sweepstakes *Requires a Stage 2 ECU Remap to eliminate check engine light and to take full advantage of power gains*
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
Performance exhaust systems increase flows to improve throttle response and add power. Designed to reduce back pressure, our large selection of performance exhaust parts and performance exhaust systems is made from premium materials like stainless steel. Many are TIG welded and polished to make them as attractive as they are functional.
Lifetime Replacement
