No Vehicle selected
Please select your vehicle below.
Catted Downpipes with or without X pipe and with or without Integrated Baffling!
Featuring a HJS brand 200-cell Hi-Flow Sport Cat, for use with Milltek cat-back only
Fits to Milltek cat-back
Lifetime Replacement
Used to adapt IE downpipe (RS3/TTRS) to stock Cat-back system, or IE Cat-Back (RS3) to stock downpipe
Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
Lifetime Replacement
Featuring a Milltek Sport Hi-Flow Sport Cat, for use with the stock cat-back
Fits to OE cat-back
Lifetime Replacement
2.5" stainless steel downpipes made in one piece, stopping those pesky leaks.
For models with manual transmission only.
Lifetime Replacement
Featuring Milltek Sport Hi-Flow Sports Cat
Lifetime Replacement
Featuring Milltek Sport Hi-Flow sports cat, designed for Milltek's 3" cat-back systems.
Lifetime Replacement
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*
Lifetime Replacement
Built as a direct OEM replacement, these downpipes are designed to increase low-end torque and maximize power throughout the entire RPM band
*Necked down to stock pipe size - To be used with factory exhaust components*
Lifetime Replacement
Maximize your engine's performance!
Lifetime Replacement
Stainless steel 3" downpipe with HJS sport catalytic converter designed to work with 2.75" cat-back exhaust systems.
Lifetime Replacement
Includes a single high flow catalytic converter which is less restrictive than the factory converter providing maximum flow.
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
09-01-2026
Lifetime Replacement
Allow turbos to spool faster and generate more power lower in the RPM range.
This product was last offered at the strikethrough price on
06-11-2026
Lifetime Replacement
Stainless steel 3" downpipe with high flow catalytic converter designed to work with 3" cat-back exhaust systems.
For use with Milltek cat-back exhaust only
Lifetime Replacement
An upgraded downpipe is a must-have item for any owner looking to make serious power from their vehicle.
Lifetime Replacement
Delivers more power, especially in the low and mid rev range while adding a deep sporty sound.
For vehicles up through 2020
Lifetime Replacement
