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NM Engineering BMW Exhaust Parts, Mufflers & Catalytic Converters

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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NM Eng. Downpipe-Back Exhaust System
NM Eng. Downpipe-Back Exhaust System
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
NM Engineering - Corporate Logo
T#:22756697
Part#: NM.308844
In Stock
Sale - Save 5% $ 1,359.00

This product was last offered at the strikethrough price on
07-02-2026

$ 1,287.52 USD
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Sale - Save 5%
$ 1,359.00

This product was last offered at the strikethrough price on
07-02-2026

$ 1,287.52 USD
Add to Wish List

NM exhaust systems, meticulously crafted from premium T304 stainless steel, guarantee exceptional performance and durability both inside and out. These exhaust systems feature generous metric-sized tubing and low-restriction stainless steel mufflers, thoughtfully engineered to reduce weight and comply with State noise regulations. With polished mufflers and tips, CNC mandrel bends, precision fit flanges, and mounting hangers as standard, NM sets the bar high for exhaust systems. Expect a substantial 10-14 HP gain with this system.

Designed for hassle-free installation, this system begins immediately after the downpipe at the factory v-band clamp, offering a complete bolt-on solution without the need for any cutting. The exhaust system boasts a 76mm (3-inch) tubing diameter, accentuated by dual 100mm (4-inch) polished tips for an added touch of style.

Notes:

  • FITS NORTH AMERICA MODELS ONLY!
  • Front-wheel drive models may require minor heat shield adjustments.
  • For off-road or competition use only.
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NM Cat Back Exhaust System
NM Cat Back Exhaust System
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
NM Engineering - Corporate Logo
T#:639288
Part#: NM.308856
Ships in 2 Business Days
Sale - Save 5% $ 1,049.00

This product was last offered at the strikethrough price on
07-02-2026

$ 993.82 USD
Add to Wish List
Sale - Save 5%
$ 1,049.00

This product was last offered at the strikethrough price on
07-02-2026

$ 993.82 USD
Add to Wish List
NM Eng. Downpipe-Back Exhaust System - F56 - NM.308846.2
NM Eng. Downpipe-Back Exhaust System - F56 - NM.308846.2
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
NM Engineering - Corporate Logo
T#:23383284
Part#: NM.308846
Ships in 2 Business Days
Sale - Save 5% $ 1,263.99

This product was last offered at the strikethrough price on
07-02-2026

$ 1,196.62 USD
Add to Wish List
Sale - Save 5%
$ 1,263.99

This product was last offered at the strikethrough price on
07-02-2026

$ 1,196.62 USD
Add to Wish List

Enhance your driving experience with the NM F56 Downpipe-Back Exhaust System, meticulously crafted for optimum performance and superior durability. Constructed entirely from aerospace-grade T304 stainless steel, this system stands as a pinnacle of engineering.

Key Benefits:

  • Enhanced Performance: Experience a remarkable 10~14 HP gain due to its innovative design.
  • Dual Resonance Chamber (DRC) Muffler: Enjoy two distinct sound levels based on throttle input and boost levels.
  • Customizable Sound: From a round, deep sound during partial throttle to a raspier exhaust note and MINI exhaust popping (burble) note during deceleration at full throttle.
  • Easy Installation: A complete bolt-on system from the factory v-band clamp ensures straightforward installation without any cutting required.
  • Quality Craftsmanship: Featuring 70mm tubing and dual 100mm (4") polished tips, each component reflects precision CNC mandrel bends, precise fit flanges, and mounting hangers, setting a standard of excellence.

Notes: Please note that this exhaust system is intended for off-road use only.

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