Deliver up to 577HP with a matching IE Stage 2 Tune and turn your 2.5T into an all-out power monster!
*Does not include Y-pipe adapter (IEEXCQ3) - Necessary if mating to stock cat-back system*
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.
10X Entries Into Our F80 M3 Sweepstakes
Brand:
ES#:
4818337
Mfg#:
005723LA01KT
In Stock
ON SALE!
SAVE 10%
$565.99
This product was last offered at the strikethrough price on 06-13-2026
T304 seamless stainless, mandrel bent tubing downpipe to rid your TT of the restrictive factory downpipe
*Coupe models only, Will not fit roadster - A check engine light may occur due to high flow catalytic con
Brand:
ES#:
2862910
Mfg#:
CTSEXHDP0010CAT
Ships in 8 Business Days
ON SALE!
SAVE 10%
$649.99
This product was last offered at the strikethrough price on 09-29-2026
Designed as a drop-in replacement for the restrictive B9 RS5 factory catalytic converters - offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and enhanced exhaust note!
2X Entries Into Our F80 M3 Sweepstakes *This catalyst requires a Stage 2 Racing Use Only Remap to eliminate any check engine lights due to removal of the factory catalyst*
Upgrade your downpipe with a performance aftermarket downpipe to reduce restrictions and increase performance with a hearty improvement to your exhaust and turbo sound.
Lifetime Replacement
