Showing 30 results for "turner n55 downpipe"

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VRSF High Flow Catted Downpipe - E8x E9x N55
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VRSF - Corporate Logo
T#:585057
Part#: 10902016
In Stock
$ 489.99 USD
Free Shipping
$ 489.99 USD
Free Shipping
3.5" Ceramic Coated Catted Downpipe
VRSF Downpipe Upgrade - Performance High Flow Cat - F30 N55
We Price Match - Give Us A Call or Chat! For vehicles with production date up to 07/13
VRSF - Corporate Logo
T#:584882
Part#: 10302021
In Stock
$ 479.99 USD
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$ 479.99 USD
Free Shipping
Reduce back-pressure by replacing the restrictive catalytic converter in the factory downpipe with a Performance high-flow race cat. The high-flow 200-cell race cat results in a faster spool, an increase in power, as well as a more aggressive exhaust tone. VRSF offers high-quality products at an exceptional value. This downpipe is handcrafted from SS304 grade stainless steel with smooth radius bends to decrease turbulence and flow. Made from hand-crafted, tig-welded 304-grade stainless steel. Smooth radius bends to decrease turbulence and increase flow. 200 cell high flow cat CNC SS304 stainless steel flanges. Gains from 20-25hp with tune VRSF Lifetime Warranty
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Active Autowerke - Corporate Logo
T#:599319
Part#: 11-040-C
Ships in 3 Business Days
$ 1,424.99 USD
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$ 1,424.99 USD
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BMW introduced a new valvetronic, single turbo version of its direct-injection engine for the F-Chassis models beginning in 2012. The Active Autowerke N55 downpipe for the M235i, 335i, 435i and M2 helps unleash some of the potential that is restricted by the OEM downpipe. Turbochargers are powered by spent exhaust gases created during the combustion process. The quicker these gases are evacuated, the better. Unfortunately, the factory down pipe in the N55 is quite restrictive, which results in slower exhaust gases and slower turbo spool. The Active Autowerke F-Chassis N55 Signature down pipe utilizes 3.5” diameter stainless steel piping in order to provide more power, quicker spool, and extreme durability. This variant includes a 4.5" high flow GESI catalytic converter that will NOT produce a CEL! The GESi® G-Sport Ultra High Output Catalytic Converter features full 304 stainless steel construction, including the substrate. GESi® UHO-Series Catalytic Converters are EPA certified in 49 states and fully OBD2 compliant. GESi® proprietary precious metal loading technology ensures greatly reduced emissions, eliminating most "Check Engine Lights". These high flow catalytic converters outperform stock converters and provide a reliable solution to the most common catalytic converter problems. The GESi® UHO-Series Catalytic Converters are rated for engines putting out between 500 and 850 horsepower while maintaining a high flow capacity. The reduced back-pressure from this high flow catalytic converter will allow you to maximize your engines horsepower without the harmful emissions. Say goodbye to Check Engine Lights and failed emissions tests! Please Note: These catalytic converters are not legal for use on vehicles registered in the state of California as a result of California Vehicle Code Section 27156 and 38391.
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Wagner Tuning - Corporate Logo
T#:214367
Part#: 500001005
Ships in 2 Business Days
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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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
VRSF High Flow Catted Downpipe - F25/F26 N55
We Price Match - Give Us A Call or Chat!
VRSF - Corporate Logo
T#:585126
Part#: 10252011
Ships in 1 Business Day
$ 289.99 USD
Free Shipping
$ 289.99 USD
Free Shipping
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 SS304 grade stainless steel with smooth radius bends to decrease turbulence and flow.
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Wagner Tuning - Corporate Logo
T#:214368
Part#: 500001013
Ships in 9 Business Days
$ 899.00 USD
$ 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: 300cpi Catalytic Converter 100% perfect fit - CAD designed - Replaces BMW # 18328602882 less thermal load on the turbocharger more power by reducing back pressure significantly more torque Made from 1.4301 (SS304) Stainless Steel
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Wagner Tuning - Corporate Logo
T#:214369
Part#: 500001010
Ships in 1 Business Day
$ 910.00 USD
Free Shipping on orders $49 and up

Wagner downpipes for F30 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
  • connection diameter 105mm
  • Made from 1.4301 (SS304) Stainless Steel


     
  •  

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:
2012-6/2013 F30 BMW 335i 335i xDrive - Sedan
Left Hand Drive ONLY

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VRSF High Flow Catted Downpipe - F26 N55
We Price Match - Give Us A Call or Chat!
VRSF - Corporate Logo
T#:585131
Part#: 10262011
Ships in 1 Business Day
$ 419.99 USD
Free Shipping
$ 419.99 USD
Free Shipping
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 SS304 grade stainless steel with smooth radius bends to decrease turbulence and flow.
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VRSF Stainless Steel Downpipe Upgrade - F26 N55
We Price Match - Give Us A Call or Chat!
VRSF - Corporate Logo
T#:585138
Part#: 10262010KT
Back Ordered
Starting at $ 419.98 USD
Free Shipping
Starting at $ 419.98 USD
Free Shipping
Reduce back-pressure by eliminating/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 SS304 grade stainless steel with smooth radius bends to decrease turbulence and flow. VRSF offers high quality products at an exceptional value, including a lifetime warranty.
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AFE - Corporate Logo
T#:388525
Part#: 48-36302KT1
Back Ordered
$ 595.00 USD
Free Shipping
$ 595.00 USD
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This awesome Mach Force XP Down Pipe produces 14 horsepower and 39 lbs. x ft. of torque at 1900 RPM. The Mach Force XP down pipe is constructed of mandrel bent, brushed 304 stainless steel tubing and flanges and uses all factory mounting locations. Using a unique resonance chamber to capture sound waves and minimize exhaust "drone", this system produces an aggressive tone on throttle but a smooth sound at cruising speeds without affecting performance. This down pipe is 100% TIG-Welded. Note: this product will activate the check engine light.

This part alters or deletes the emissions equipment on your car, and may not meet emissions standards in all states. Because of this, we require a waiver of emissions compliance to be signed and sent in to TMS. You can download the waiver here.

Left Hand Drive ONLY

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Genuine BMW - Corporate Logo
T#:48827
Part#: 18407645241
Ships in 1 day
$ 3,533.99 USD
Free Shipping
$ 3,533.99 USD
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Price includes an $1800.00 refundable core charge.


VRSF - Corporate Logo
T#:35154903
Part#: 504010
In Stock
$ 8.99 USD
Free Shipping on orders $49 and up
$ 8.99 USD
Free Shipping on orders $49 and up

This plug is a replacement for the following models: 10901020A, 10901020B, 10901020C, 10901020D, 10301050, 10101020 and any other VRSF chargepipe that utilizes a water injection bung. VRSF Replacement Chargepipe Methanol/Water Injection Bung Plug for 07-16 BMW N54/ N55/ N20/ N26/ S55/ B58 is a crucial component for maintaining peak performance in turbocharged BMW engines. Designed to prevent boost leaks and ensure a secure seal for methanol and water injection ports, this bung plug is crafted from premium materials for long-lasting reliability. Compatible with VRSF chargepipes, it is an ideal solution for BMW enthusiasts seeking precision and durability in their high-performance setups. Available through Turner Motorsport, this part ensures seamless integration with your BMW's engine components.

Benefits: Ensures a secure seal for methanol and water injection ports to prevent boost leaks Built from high-quality materials for superior strength and longevity Compatible with VRSF chargepipes on 07-16 BMW N54, N55, N20, N26, S55, and B58 engines Easy installation minimizes downtime and simplifies engine upgrades Maintains optimal turbo efficiency and performance in high-pressure systems The VRSF Replacement Chargepipe Methanol/Water Injection Bung Plug for 07-16 BMW N54/ N55/ N20/ N26/ S55/ B58 is the ultimate choice for BMW owners committed to maximizing reliability and performance.

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CTS - Corporate Logo
T#:27472196
Part#: CTS-EXHDP0023CAT
Ships in 7 Business Days
Sale - Save 5% $ 379.99

This product was last offered at the strikethrough price on
09-29-2026

$ 359.99 USD
Free Shipping
Sale - Save 5%
$ 379.99

This product was last offered at the strikethrough price on
09-29-2026

$ 359.99 USD
Free Shipping

Unleash the full potential of your BMW N55 (Electric Wastegate) with the CTS Turbo High-flow Cat, meticulously designed to optimize exhaust flow and deliver unmatched power gains. Bid farewell to factory constraints and welcome superior performance and enhanced sound!

Utilizing advanced CAD technology, this component seamlessly replaces your factory downpipe, ensuring a precise fit. Crafted from robust T304 stainless steel and expertly hand TIG welded with back purging, it ensures long-lasting and dependable performance.

Highlighted Features:

Precision-designed and rigorously tested for peak performance T304 stainless steel construction with TIG welded back-purged joints Direct replacement for the restrictive factory downpipe Substantial power increase without sacrificing performance Creates an exhilarating sporty exhaust sound while maintaining a refined tone during normal driving Eliminates drone typically found with factory exhaust setups Elevate your BMW N55's performance and sound with the CTS Turbo High-flow Cat, engineered for exceptional quality and outstanding performance on the road.

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CTS - Corporate Logo
T#:23053155
Part#: CTS-EXH-DP-0022-
Ships in 7 Business Days
Sale - Save 33% $ 399.99

This product was last offered at the strikethrough price on
09-29-2026

$ 269.99 USD
Free Shipping
Sale - Save 33%
$ 399.99

This product was last offered at the strikethrough price on
09-29-2026

$ 269.99 USD
Free Shipping

Enhance your BMW's performance with the CTS Turbo high-flow catalytic converter designed specifically for the BMW N55 (Pneumatic Wastegate) engine. This aftermarket part aims to optimize exhaust flow, delivering significant power gains without compromising performance or sound quality.

  • Precision-designed and real-world tested for optimal performance
  • Constructed from durable T304 stainless steel with hand TIG welding and back purging for reliability
  • Replaces the factory downpipe, reducing restrictions and unlocking greater power
  • Offers a sporty exhaust note, delivering a subdued sound during cruising without excessive drone
  • Requires proper tuning software like Bootmod3 for CEL removal; recommended for OFF-ROAD use only
  • Note: Catalytic converters damaged by "crackle tune" are not covered under warranty.
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Catalytic Converter Installation Kit - B58 3.0L
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:27238750
Part#: 18328612537KT2
Ships on Jan 19, 2027
Sale - Save 6% $ 102.99

This product was last offered at the strikethrough price on
07-09-2026

$ 96.69 USD
Free Shipping on orders $49 and up
Sale - Save 6%
$ 102.99

This product was last offered at the strikethrough price on
07-09-2026

$ 96.69 USD
Free Shipping on orders $49 and up
Prevent engine issues and error codes caused by exhaust leaks with the correct installation of components using appropriate gaskets and hardware.

Supersprint - Corporate Logo
T#:588197
Part#: TMSF87M2SS
Back Ordered
Starting at $ 2,915.98 USD
Starting at $ 2,915.98 USD
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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Downpipe To Cat-Back Reducer - Priced Each
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:22427013
Part#: 006555ECS06B
In Stock
Sale - Save 25% $ 39.99

This product was last offered at the strikethrough price on
06-14-2026

$ 29.99 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 39.99

This product was last offered at the strikethrough price on
06-14-2026

$ 29.99 USD
Free Shipping on orders $49 and up

Upgrade your exhaust system with the Downpipe To Cat-Back Reducer.

Engineered for optimal performance and durability, this reducer allows for seamless connection between your downpipe and cat-back exhaust system. Its high-quality construction ensures a tight seal, reducing exhaust leaks and enhancing overall exhaust flow. With easy installation and compatibility with various exhaust systems, this reducer is a must-have for any performance enthusiast.

  • Allows for seamless connection between downpipe and cat-back exhaust
  • High-quality construction for durability
  • Tight seal reduces exhaust leaks
  • Enhances overall exhaust flow
  • Easy installation and compatibility with various exhaust systems
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Magnaflow - Corporate Logo
T#:23020136
Part#: 52258
In Stock
$ 882.00 USD
Free Shipping
$ 882.00 USD
Free Shipping

Durable Catalytic Converter for Optimal Emissions Control

Ensure optimal emissions control with a durable and efficient catalytic converter. This essential emissions device effectively converts engine exhaust gases into less harmful substances using a combination of a honeycomb monolith, washcoat, and precious metal catalyst. Over time, catalytic converters wear out and can become damaged, especially when the engine runs too rich on fuel, resulting in oxygen sensor faults.

Replace your faulty or damaged catalytic converter to guarantee compliance with Federal Emissions standards and pass upcoming emissions tests hassle-free.

Key Features:

  • Stainless steel construction ensures durability and longevity
  • Designed to meet Federal Emissions regulations
  • Suitable for both Gas and Diesel Applications
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Evolution Racewerks - Corporate Logo
T#:3062301
Part#: BM-EXH009CAT
In Stock
$ 995.00 USD
Free Shipping
$ 995.00 USD
Free Shipping
Key Features: High Flow 200 cell metallic catalytic converter used. Better throttle response and faster turbo spool-up times. Mandrel Bent 4" piping. Smooth transition to the exhaust system. 100% Stainless Steel Construction 100% TIG welded for better quality welds Precision CNC machined turbocharger V-Band flange. Brushed Finish (standard) Compatible with factory or aftermarket exhaust systems. Track-tested durability. Includes all hardware for complete installation. Limited Lifetime Warranty. THIS ITEM IS NOT FOR SALE, INSTALLATION, OR USE ON LICENSED VEHILES IN THE STATE OF CALIFORNIA.
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Active Autowerke - Corporate Logo
T#:21045551
Part#: 11-077
Ships in 3 Business Days
$ 474.99 USD
Free Shipping
$ 474.99 USD
Free Shipping

Replacement Connecting Pipes for BMW F87 M2C/M2CS

Upgrade your BMW F87 M2C/M2CS exhaust system with these precision-engineered replacement connecting pipes, specifically designed for users of Active Autowerke's groundbreaking Equal Length Midpipe (patent pending). Crafted for discerning BMW enthusiasts, these connecting pipes ensure seamless integration and enhanced performance.

  • Tailored replacement connecting pipes for BMW F87 M2C/M2CS owners
  • Designed for compatibility with Active Autowerke's Equal Length Midpipe
  • Precision engineering for optimal fit and improved exhaust system performance
  • Ideal for those seeking elevated performance and seamless integration
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Supersprint - Corporate Logo
T#:193548
Part#: 988621
Ships on Feb 8, 2027
$ 2,695.99

This product was last offered at the strikethrough price on
10-05-2026

$ 2,310.00 USD
Free Shipping
$ 2,310.00 USD
Free Shipping
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 100-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. 100-cell cats have 100 honeycomb cells per square inch. While still cleansing the exhaust somewhat this is basically a straight-through 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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Supersprint - Corporate Logo
T#:184350
Part#: 986621
Ships on Feb 8, 2027
$ 2,701.99 USD
Free Shipping
$ 2,701.99 USD
Free Shipping

Special pricing! Free ground shipping!

The factory 35i exhaust system is pretty wide open with a minimal of 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 high-flow HJS 200-cell metallic cat that flows considerably more than the stock ceramic part.

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.

 

section:downpipe

connects to:OEM exhaust or Supersprint section 1

material:T304 stainless steel

 

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:
2011+ F25 BMW X3 xDrive35i

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Supersprint - Corporate Logo
T#:351469
Part#: 986321
Ships on Feb 8, 2027
$ 2,886.99 USD
Free Shipping
$ 2,886.99 USD
Free Shipping


Supersprint - Corporate Logo
T#:387927
Part#: 988641
Ships on Feb 8, 2027
$ 3,122.99

This product was last offered at the strikethrough price on
10-05-2026

$ 2,578.99 USD
Free Shipping
$ 2,578.99 USD
Free Shipping
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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Milltek Sport - Corporate Logo
T#:591403
Part#: SSXBM1037
Ships on Nov 24, 2026
$ 2,876.99 USD
Free Shipping
$ 2,876.99 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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XForce - Corporate Logo
T#:50934838
Part#: ESBM118KITB
Ships in 1 Business Day
$ 585.00 USD
Free Shipping on orders $49 and up
$ 585.00 USD
Free Shipping on orders $49 and up
Provides a cleaner, more efficient exit for exhaust gases, reducing under-hood heat and improving overall engine health.

Supersprint - Corporate Logo
T#:588155
Part#: 988541
Ships on Feb 8, 2027
$ 3,087.99

This product was last offered at the strikethrough price on
10-05-2026

$ 2,565.00 USD
Free Shipping
$ 2,565.00 USD
Free Shipping

Racing Dynamics - Corporate Logo
T#:20386743
Part#: 1301055560
Ships in 5 Business Days
$ 890.00 USD
Free Shipping on orders $49 and up
$ 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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AFE - Corporate Logo
T#:388459
Part#: 48-36311KT
Back Ordered
$ 484.99 USD
$ 484.99 USD

aFe is proud to introduce the aFe Twisted Steel® non-catalytic down-pipe for the 2012-2013 BMW F30 335i with the L6-3.0L (N55) engine. In testing this system resulted in a max gain of 13 horsepower and 27 lbs. x ft. of torque and outflowed the restricted OE catalytic converter by up to 190%. This high performance race pipe delivers pure, race-inspired raw power and also produces an aggressive and exciting exhaust sound during hard throttle. aFe also used a massive, light-weight 4" diameter 304 stainless steel tube and progressively tapers to increase exhaust velocity and usable torque.

Tig-Welded: 
100% TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks.

Tapered Design: 
A unique 4" Dia. 304 stainless steel taper design is used to increase exhaust velocity and increase usable torque. This means more aggressive throttle response and increased passing power.

Factory O2 Sensor Locations: 
Factory mounting locations for all O2 sensors.

Hassle-Free Installation: 
OE style brackets are included for a hassle-free installation. This unit also comes with a lifetime warranty.

aFe down pipes are engineered and manufactured in our Corona, California manufacturing facility.

Note: This is a "Race Only" product used solely for competition. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use including recreational off-road use could be in violation of local, state and federal laws. A check engine light will emit and aFe recommends using a programmer but it is not necessary.

This part alters or deletes the emissions equipment on your car, and may not meet emissions standards in all states. Because of this, we require a waiver of emissions compliance to be signed and sent in to TMS. You can download the waiver here.

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