Performance Downpipes

Every downpipe in the store on one page. A downpipe connects the turbocharger outlet to the rest of the exhaust, and these replace the factory part with a larger stainless (or in one case titanium) pipe,...

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About Performance Downpipes

Every downpipe in the store on one page. A downpipe connects the turbocharger outlet to the rest of the exhaust, and these replace the factory part with a larger stainless (or in one case titanium) pipe, sold in catless, high-flow catted or 200/300/400-cell versions depending on the listing. About half of the range is BMW (B58, S58, S55, S63, N54, N55, N63, S68 and B46/B48), with the rest covering Audi, Mercedes-AMG, Porsche, Ferrari, Lamborghini and McLaren.

Brands here are STRATEC Systems, IRL, Spool Performance, Palenon Performance, Rvng RaceWorks and RENNELEMENT. Check the engine code and chassis in each title before ordering. Catless and high-flow downpipes are intended for off-road / competition use and may not be legal for road use in your area.

Browse the wider exhaust and downpipes range or all performance parts.

Frequently asked questions

Do I need a tune to run an aftermarket downpipe?

Plan on one. Most downpipe listings recommend a supporting tune, several say a check-engine light may occur without one, and the brands quote their gains with proper tuning. Talk to your tuner before you order so the software and hardware match. Our catless vs catted guide covers the details.

What is the difference between catless, 200-cell and 400-cell downpipes?

The cell number is how many channels per square inch the converter core has. A catless (race) pipe has no converter and flows the most, with the most sound, rasp and smell. A 200-cell pipe keeps an open high-flow core, and a 300 or 400-cell pipe is denser and the most refined, closest to stock manners.

Will a downpipe cause a check-engine light?

It can. Modern cars use an oxygen sensor after the converter to check that it is working. Remove the converter, or fit a less dense one, and that sensor reads differently, so many listings state that a check-engine light may occur. A tune that accounts for the new hardware is the usual fix.

Are catless downpipes legal on the street?

Catless and high-flow downpipes and other emissions-related parts are intended for off-road and competition use and may not be legal on the street where you live. A high-flow converter is not the same as a certified replacement part, so check your local laws and inspection rules before you buy or install one.

Do the downpipes reuse the factory oxygen sensors and hardware?

Most downpipes reuse the factory oxygen sensors, so have an O2 sensor socket ready; seized sensors are common on older exhausts. Some pipes add sensor bungs, extensions or heat shields that change how the sensors fit, so check the listing for your part, and inspect the factory clamps and gaskets while everything is apart.

How do exhausts and downpipes ship, and can I return one?

Some performance parts, including many exhausts and downpipes, ship directly from the brand that makes them. Shipping for these is calculated at checkout, and they may arrive separately with their own tracking number. Made-to-order parts show their lead time on the product page. Returns are accepted within 30 days of delivery (unused, uninstalled, original packaging); non-defective partner-brand returns carry a 15% restocking fee, and large items may cost more to send back.