Designed as a drop-in replacement for the restrictive factory catalytic converters - offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and enhanced exhaust note!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms *This catalyst requires a Stage 2 Racing Use Only Remap to eliminate any check engine lights due to removal of the factory catalyst*
Offers a powerful, raw V8 rumble. Still for the daily driver, this "noticeable" system lets them know you're coming.
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Upgrade the tone of your B9 RS5 2.9T exhaust with a easy-to-install, bolt on downpipes with resonator deletes for your factory cat back exhaust.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4818337
Mfg#:
005723LA01KT
Ships in 1-2 days
ON SALE!
SAVE 15%
$553.99
This product was last offered at the strikethrough price on 05-02-2026
Takes all of the precision engineering and performance of its SwitchPath™ counterpart, minus the valve on the passenger’s side and the muffler on the driver’s side. The result is a constant “valve open” mode.
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T304 Stainless down pipe that installs directly after the factory catalytic converter
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This system deletes the factory resonator and replaces it with 3” tubing to produces a moderate exhaust tone.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4477610
Mfg#:
49-36428
In Stock at Vendor
20% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$428.99
This product was last offered at the strikethrough price on 06-06-2026
The latest IS20 paired with the MK8 PCV system for ultimate reliability
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! OEM+ Upgrade. No tuning software required
Choose between Resonated or Non Resonated configurations on the downpipes and catback!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
From stock exhaust system repairs to polished stainless steel performance exhaust, we have exhaust pipes, mufflers, resonators, and catalytic converters from the most respected suppliers in the business. Go loud, stay soft, look good with exhaust parts and systems from ECS Tuning.
Lifetime Replacement
