ECS evolutionary design and manufacturing, blending with raw emotion, desire and passion, creating a truly unique driving experience
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CTS Turbo high flow cat is made to maximize exhaust flow for highest power gains - Do not compromise performance and sound with factory parts - Unleash your B9 S4/S5 3.0T Potential!
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No cutting required, easy-to-install downpipes with resonator deletes for your factory cat back exhaust.
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Brand:
ES#:
4715650
Mfg#:
016752LA02KT
In Stock
ON SALE!
$479.99
This product was last offered at the strikethrough price on 06-13-2026
Features TIG welded brushed T304 stainless steel construction and offers gains of 10 AWHP and 12 AWFT-LBS of torque
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Brand:
ES#:
4901469
Mfg#:
CBK0012
In Stock
24% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$2418.99
This product was last offered at the strikethrough price on 04-22-2026
Features a TIG-welded 304 stainless and investment cast body and offers gains up to 45HP & 41TQ
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Brand:
ES#:
4473979
Mfg#:
IEEXCK3
In Stock
ON SALE!
SAVE 10%
$1099.99
This product was last offered at the strikethrough price on 06-25-2026
Sound great and save weight! Eliminate the center resonator on your OE system for a more aggressive exhaust note
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Brand:
ES#:
3521607
Mfg#:
024365ECS01KT
In Stock
ON SALE!
SAVE 25%
$438.99
This product was last offered at the strikethrough price on 06-13-2026
Delivers a truly aggressive exhaust note without any annoying drone or rasp
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Brand:
ES#:
4709360
Mfg#:
IEEXCK5
In Stock
ON SALE!
SAVE 10%
$1687.99
This product was last offered at the strikethrough price on 06-25-2026
Control your exhaust valves with the click of a button! Includes a standalone vacuum pump, wiring, vacuum hose, and controllers.
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Brand:
ES#:
4883843
Mfg#:
004788LA01
In Stock
ON SALE!
SAVE 10%
$100.99
This product was last offered at the strikethrough price on 06-13-2026
Choose between a 2.5" or 3.0" valved mufflers to complete your custom exhaust.
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Offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note
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Brand:
ES#:
4005390
Mfg#:
034-105-4045
In Stock
$1700.00
This product was last offered at the strikethrough price on 03-08-2026
Equipped with the same precision-engineering as its Touring Edition counterpart, minus the resonators up front and 180 Technology® resonators in the rear.
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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.
