BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW 1 Series E82 (2008-2013)

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Performance exhaust options from the best BMW aftermarket producers and the most reliable replacement maintenance parts are all at Turner Motorsport. Over time, factory exhaust on the cleanest examples of BMW heritage shows their age. Our factory replacement exhausts are just what you need to keep your favorite car in showroom condition or finish off your restoration. If you are looking for a bump in sound and power, you can also find our performance options like Headers, Downpipes, and Mufflers from Corsa, DINAN, and others on this page.

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Downpipe Installation Kit - N54 3.0L
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:587400
Part#: N54DPINSTALLKT
In Stock
$ 158.99 USD
Free Shipping
$ 158.99 USD
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This kit includes everything you need to install 2 new downpipes. All parts included are genuine BMW or high-quality aftermarket, and every necessary component is accounted for. See kit contents tab for a list of included components
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Downpipe Installation Kit - Both Pipes
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:587332
Part#: 3378TMS11KT
In Stock
$ 158.99 USD
Free Shipping
$ 158.99 USD
Free Shipping
Wagner Tuning - Corporate Logo
T#:214367
Part#: 500001005
In Stock
1% off MSRP $ 910.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 899.00 USD
1% off MSRP
$ 910.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 899.00 USD

These N55 downpipes feature larger piping and catalytic converter that are freer-flowing than the original cats for better flow and less backpressure. By removing exhaust restrictions the turbos can spool up faster which makes more boost sooner. With additional tuning, more power is available. There are downpipes that delete the primary cats and can leave the exhaust with a dirty and awful smell. These Wagner downpipes are built with a sport cat to keep the exhaust cleaner.Special software, or stand-alone engine management, will be required to keep emissions fault codes and check engine lights from appearing.

Features:

  • 200cpi Catalytic Converter
  • 100% perfect fit - CAD designed.
  • less thermal load on the turbocharger
  • more power by reducing back pressure
  • significantly more torque
  • Made from 1.4301 (SS304) Stainless Steel

For 2011 models, pick up a Cobb AccessPort programmer to go along with these downpipes. Additional tunes are available that will get the most out of this upgrade. Not only will the Cobb AP increase horsepower and torque but special programming is available to keep fault codes, check engine lights, and limp mode from disrupting your day. It has other features too such as data logging and diagnostic fault code reading and clearing. The Cobb AP is the most sophisticated programming tool available for the 135/335 and no tuning plan should be without one..

Made in the USA.

This product modifies (but does not remove or defeat) emissions equipment. For this reason this product may not be CARB compliant, and therefore not emissions legal in some states. Consult local laws and regulations in your area. For more information on this product, feel free to contact our sales department.

 


This item fits the following BMWs with the N55 engine:
2011-2013 E82 BMW 135i 135is
2011 E90 BMW 335i 335xi 335i xDrive - Sedan
2011-2013 E92 BMW 335i 335xi 335i xDrive - Coupe
2011-2013 E93 BMW 335i - Convertible
Left Hand Drive ONLY

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Front Oxygen Sensor Set - E9x, E82, E88, Z4
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:55317713
Part#: BFR1/2O2SKT2
In Stock
New Item
$ 400.99

This product was last offered at the strikethrough price on
07-14-2026

$ 335.99 USD
Free Shipping on orders $49 and up
$ 335.99 USD
Free Shipping on orders $49 and up
Over time, that degradation robs your BMW of its crisp throttle response, tanks your fuel economy, and leaves you staring at a failed emissions ticket

Bosch Oxygen Sensors - Bank 1 And 2 Pre-Cat - N52
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:56110313
Part#: 11787558055KT
In Stock
New Item
$ 307.99

This product was last offered at the strikethrough price on
08-13-2026

$ 304.99 USD
Free Shipping on orders $49 and up
$ 304.99 USD
Free Shipping on orders $49 and up
Your engine's air fuel ratio needs to be dead on. Worn out factory pre-cat oxygen sensors delay vital data to the DME, leading to sub optimal fueling, lost horsepower, and dangerous hesitation under load.
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Packaged by Turner - Corporate Logo
T#:55857772
Part#: 11787589475KT2
In Stock
New Item
$ 335.99 USD
Free Shipping on orders $49 and up
Extreme exhaust heat and carbon buildup degrade your factory oxygen sensors over time, sending lazy data to your DME and robbing you of performance.

Rear Oxygen Sensor Set - N52, N54
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:55353594
Part#: 11787545074/5KT2
Ships in 1 Business Day
New Item
$ 366.99 USD
Free Shipping on orders $49 and up
Sluggish oxygen sensors do a lot more than just light up your dashboard with an annoying Check Engine Light—they directly choke your BMW’s performance.
Packaged by Turner - Corporate Logo
T#:55857771
Part#: 026732TMS03KTKT2
Ships on Oct 29, 2026
New Item
$ 279.99 USD
Free Shipping on orders $49 and up