BMW Downpipes for BMW 3 Series F30 (2012+)

CAT-SECTION BMW F20/21 125d EurO6

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T#:395566

Part#: 521632

Ships in 3 Business Days

$ 1,836.00 USD

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$ 1,836.00 USD

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Supersprint Turbo Downpipe with Metallic Sport Cat

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T#:390701

Part#: 524321

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$ 2,070.00 USD

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$ 2,070.00 USD

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Downpipe with Sport Catalytic Converter - 200 CPI

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T#:393674

Part#: 524241

Ships on Oct 13, 2026

$ 2,940.00 USD

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$ 2,940.00 USD

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Downpipe with High-flow Race Catalytic Converter

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T#:584221

Part#: 524221

Ships in 3 Business Days

$ 2,460.00 USD

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$ 2,460.00 USD

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This Supersprint downpipe is designed to be a plug&play upgrade replacing the stock down pipe without any modification. Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long lasting construction and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preference. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation!

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Hi-Flow Sports Catted Downpipes - B58

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T#:591396

Part#: SSXBM1039

Ships in 3 Business Days

Sale - Save 10% $ 2,935.99

This product was last offered at the strikethrough price on
07-01-2026

$ 2,641.51 USD

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$ 2,935.99

This product was last offered at the strikethrough price on
07-01-2026

$ 2,641.51 USD

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With in-house production and engineering in the United Kingdom, they have been designing and developing exhaust systems for over 32 years. This experience has helped put Milltek on the map when it comes to performance exhausts, with offerings that range from Audi/Volkswagen to Porsche, BMW, and even Bentley. But, they don't stop there. Milltek has also made its presence felt in the motorsport community. Through partnerships with various race teams throughout the world, Milltek has gathered feedback on ways to improve their systems from enthusiasts at every level. Constructed of type-304 aircraft grade stainless steel, the quality is top-notch. To take it a step further, Milltek offers a lifetime warranty to the original purchaser.

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034Motorsport Stainless Steel Racing Catalyst/Downpipe

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T#:26771743

Part#: 034-105-4051

Ships in 2 Business Days

Sale - Save 10% $ 1,158.00

This product was last offered at the strikethrough price on
06-28-2026

$ 1,042.20 USD

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Sale - Save 10%

$ 1,158.00

This product was last offered at the strikethrough price on
06-28-2026

$ 1,042.20 USD

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The 034Motorsport Stainless Steel Racing Catalyst is purpose-built to replace the restrictive factory catalytic converter in BMW F2x/F3x B58 vehicles. With this downpipe installed, drivers can expect significant gains in horsepower and torque throughout the powerband. Additionally, turbocharger lag is reduced, throttle response is improved, and the exhaust note is enhanced for a more aggressive tone. By eliminating the primary bottleneck in the stock exhaust system, this upgrade allows owners to fully unlock the potential of their turbocharged engines.

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Supersprint Turbo Downpipe - 200-Cell Metallic Sport Cat (118mm Inlet...

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T#:387927

Part#: 988641

Ships in 3 Business Days

$ 3,122.99 USD

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$ 3,122.99 USD

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Free ground shipping! The factory 235/335/435 N55 exhaust system is pretty wide open with minimal restrictions - except for the catalytic converter. The factory cat is the biggest restriction so any exhaust work to gain more power is going to have to involve replacing it with something freer-flowing. Supersprint's downpipe incorporates a ultra high-flow HJS 200-cell metallic cat that flows considerably more than the stock ceramic part. It also uses bigger 80mm piping to minimize restrictions. Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long lasting construction and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preferance. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation! Supersprint metallic sport catalytic converters are sourced from HJS of Germany. For 30 years HJS has been supplying motorsports teams with sport cats when rules required them. HJS is now a worldwide leader in sport cat technology and performance. Rally cars, German DTM, and Formula 3 all rely on HJS for clean, reliable horsepower. Supersprint works closely with HJS to spec a catalytic converter that is correct for the vehicle and engine package. This allows for a substantial increase in flow but which, at the same time, keeps the environmental specs within European limits. With any high-flow catalytic converter, special software or other work may be required to keep emissions fault codes and check engine lights from displaying. Supersprint catalytic converters are sold for track and other off-road uses only. 200-cell cats have 200 honeycomb cells per square inch. This is much better flow than stock but still does a good job of cleansing the exhaust. Dyno (M135i): +28hp / +17ft-lbs Supersprint downpipe with sport cat section 1, section 2 straight pipes performance muffler 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.

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F22 228i, F30/F31/F34 328i, F32 428i Supersprint Turbo Downpipe with ...

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T#:184388

Part#: 987321

Ships in 3 Business Days

$ 2,010.00 USD

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$ 2,010.00 USD

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Racing Dynamics Catted Downpipe

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T#:20386743

Part#: 1301055560

Ships in 5 Business Days

$ 890.00 USD

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$ 890.00 USD

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Catted downpipe with heat shield for BMW M135i/M235i/335i/435i/M2 F87 model with the 3.0 liter turbocharged N55 straight 6 motor from 2015-2018. Eliminates the largest restriction in your exhaust with a 200 cell sport cat. Large input flange with 4" mandrel bent downpipe manufactured out of 304 stainless steel, TIG welded with brushed finish. For left & right hand drive models! Features: Large 4 1/2" inlet flange, 4" tubing and straight-through design allows for maximum power and sound. Heat Shield to funnel the heat out the exhaust and lower temperature in engine compartment. Heat shield is used to protect surrounding parts, wires, and hoses against radiant heat from the downpipes, Integrated thermal insulation reduces surface temperature up to 70% Straight-through tubing section replaces the heavy and restrictive OEM catalytic converters for maximum power and sound Improves horsepower and torque significantly. Approximately 20 HP with a tune. Downpipe includes a 200 cell sport catalytic converter for a cleaner environment Direct bolt-on replacement for OEM primary catalytic converters Less thermal load on the turbocharger Reduces turbo lag Applications: BMW M135i N55 F20 2014-18 BMW M235i N55 F22 2014-18 BMW 335i N55 F30/F31/F34 2014-18 BMW 435i N55 F32 2014-18 BMW M2 N55 F87 2014-21

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Catalytic Converter Installation Kit - B58 3.0L

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T#:27238750

Part#: 18328612537KT2

In Stock

Sale - Save 7% $ 103.99

This product was last offered at the strikethrough price on
03-10-2026

$ 96.69 USD

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Sale - Save 7%

$ 103.99

This product was last offered at the strikethrough price on
03-10-2026

$ 96.69 USD

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Prevent engine issues and error codes caused by exhaust leaks with the correct installation of components using appropriate gaskets and hardware.

VRSF Downpipe Upgrade with Catalytic Converter & Heat Shield - F22/23...

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T#:42369337

Part#: 10582028

Back Ordered

$ 579.99 USD

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$ 579.99 USD

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Reduce back-pressure by upgrading the restrictive catalytic converter in the factory downpipe. Expect an increase in power as well as a more aggressive exhaust tone. This downpipe is handcrafted from 4.5" 304-grade stainless steel with smooth radius bends to decrease turbulence and flow. VRSF offers high-quality products at an exceptional value, including a 1-year limited warranty.

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Akrapovic Catted Downpipe Upgrade - B58

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T#:2617093

Part#: DP-BM/SS/5/H

Back Ordered

$ 2,898.99 USD

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$ 2,898.99 USD

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Delivering great sound, without creating unwanted cabin noise, these beautifully-crafted downpipes offer an upgrade to Akrapovič’s Evolution exhaust system.

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SELECT YOUR BMW

BMW Downpipes for BMW 3 Series F30 (2012+)

CAT-SECTION BMW F20/21 125d EurO6

Supersprint Turbo Downpipe with Metallic Sport Cat

Downpipe with Sport Catalytic Converter - 200 CPI

Downpipe with High-flow Race Catalytic Converter

Hi-Flow Sports Catted Downpipes - B58

034Motorsport Stainless Steel Racing Catalyst/Downpipe

Supersprint Turbo Downpipe - 200-Cell Metallic Sport Cat (118mm Inlet...

F22 228i, F30/F31/F34 328i, F32 428i Supersprint Turbo Downpipe with ...

Racing Dynamics Catted Downpipe

Catalytic Converter Installation Kit - B58 3.0L

VRSF Downpipe Upgrade with Catalytic Converter & Heat Shield - F22/23...

Akrapovic Catted Downpipe Upgrade - B58

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