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BMW E93 Performance Headers & Downpipes

BMW E93 Performance Headers & Downpipes Headers are a bolt-on component that will make a huge improvement in how your BMW performs. As a replacement for your factory BMW exhaust manifold, our BMW headers provide a more direct path for exhaust gasses leaving your engine. Headers prevent your BMW's exhaust pulses from "fighting" one another as they leave the head. The end result is that BMW headers give you more power and torque, and you'll love the high-winding top end push that a free-breathing engine exhibits. BMW headers are a must-have if you're doing any engine modifications on your vehicle. Along with a cold air intake, BMW headers provide the free-flowing exhaust necessary to get the most power out of your motor.
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E82 135i, E9X 335i N54 CP-E Cat-less Downpipes


Power Gain: +14hp
Torque Gain: +12ft-lbs

In your quest for the ultimate boost and power gains from your twin-turbo N54 your plans should include a set of cat-less downpipes. Removing the catalytic converters opens up the exhaust flow and with less restriction the turbos can spin and spool easier. This means boost comes in sooner and with more force. More power is available with proper software tuning.

The CP-E downpipes are among the finest crafted turbo downpipes we have seen for the N54 engine. They use a CAM/CAD process, and automated manufacturing, that ensures a tight and precise tolerance for fitment and construction. This attention to detail and craftsmanship will never be found on the cheap auction sites. These pipes are made from 304 stainless steel, 3" diameter at the inlet and then tuned piping down to meet the stock exhaust section. The piping is not only mandrel bent but also features fewer joints and welds than other downpipes that can disrupt flow. These are a direct replacement for the stock downpipe and cat section, including fitment for Xi AWD models. No permanent modifications are made and the upgrade is completely reversible. You retain your factory oxygen sensors. Add a O2 bung kit if you wish to install a wideband sensor on the downpipe.

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.
Lifetime warranty

 

This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and either e-mailed or faxed to Turner Motorsport before shipping. You can download the waiver here.


This item fits the following BMWs with the N54 engine:
2008-2010 E82 BMW 135i 1M Coupe
2006-2010 E90 BMW 335i 335xi 335i xDrive - Sedan
2007-2010 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
2007-2010 E93 BMW 335i - Convertible
Left Hand Drive ONLY

Custom Performance Engineering
Part #: bn54dpoKT
Price: $649.90 (USD) 
Ships on Jul 31, 2018
Quantity:   
Turner Motorsport 3

Factory downpipes and their catalysts are a choke point for exhaust gases. This restriction slows turbocharger spool and reduces efficiency, and has a significant impact on power. When modifying their N54, most enthusiasts quickly find OEM downpipes offer insufficient performance as power levels are increased, resulting in disappointing results from other modifications. While some find catless downpipes to be the answer, their benefits are increasingly failing to outweigh the downsides when used on the street. Exhaust volume is increased (combined with a full exhaust may be too much for sensitive ears), check engine lights are frequently illuminated, and emissions are greatly increased (a problem for the environment and in passing emissions testing).

Turner engineers designed downpipes that met a happy compromise - excellent flow with high performance 48-state legal catalytic converters. By utilizing cats, these downpipes offer much lower emissions than catless products (and in many cases, no check engine light), with little sacrifice to performance versus their catless counterparts. These high-flow units feature a 3" inlet, followed by a series of smooth radius bends and efficient catalyst, exits as a 2.5" to retain compatibility with popular cat-back exhausts (as well as factory exhaust piping).

We confirmed power and efficiency improvements are present on both a stock tune with even greater power to be found versus factory downpipes while utilizing a simple ECU tune. These gains were confirmed on our in-house Mustang AWD-500 dynamometer while running an off-the-shelf (no tuning trickery in these numbers) Cobb Stage 1 tune:

Stock downpipes wheel horsepower: 314hp @ 5700rpm
Stock downpipes wheel torque: 386ft/lb @ 4000rpm

Turner downpipe wheel horsepower: 334hp @ 6000rpm
Turner downpipe wheel torque: 390ft/lb @ 4100rpm

Max gains:
36hp
 @ 6500rpm
23ft/lb @ 6000rpm

Product features:

  • Large diameter 3" tubing and 200 cell high-flow catalytic converters - significantly reducing flow restriction found on factory downpipes
  • 304 stainless steel with beautiful quality TIG welds
  • Precise fitment - no wrestling to install, listening to clunks, or feeling vibration associated with ill-fitting downpipes
  • Uses factory clamp 11657620508 and factory gaskets 18307553601 (x2) and 18307553603 (x2). Install kit available here


Looking for even more power? Our knowledgeable sales staff is eager to help with your build - give us a call.
 

This item fits the following left-hand-drive BMWs with the N54 engine:
2008-2010 E82 BMW 135i 1M Coupe
2006-2010 E90 BMW 335i 335xi 335i xDrive - Sedan
2007-2010 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
2007-2010 E93 BMW 335i - Convertible

 

Turner Motorsport
Part #: 000932TMS
Price: $870.90 (USD) 
In Stock
Free Shipping Free Shipping
Wagner Cat-less Downpipes - N54 - E9x 335i/xi, E82 135i, 1M

Includes $25 Turner Motorsport gift card for the month of June!

Eliminate the biggest restriction in the E9x and E82/88 exhaust system by deleting the primary catalytic converter. On a track car, cats are no longer needed or wanted. They rob the turbo engine of power and torque, contribute excessive heat build-up, and lead to a total blockage if the catalytic material fails. This Wagner cat-less downpipe solves all of that by having no restrictions through its oversized diameter piping. Special software, or stand-alone engine management, will be required to keep emissions fault codes and check engine lights from appearing.

Features:

  • True 70mm Downpipes with mandrel bends and flex section
  • 100% perfect fit, replace OEM
  • less thermal load on the turbocharger
  • more power by reducing back pressure
  • significantly more torque
  • Made from 1.4301 (SS304) Stainless Steel




     
  •  
  •  

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.


This item fits the following BMWs:
2008-2010 E82 BMW 135i
2011 E82 BMW 1M Coupe
2006-2010 E90 BMW 335i 335xi 335i xDrive - Sedan
2007-2010 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
2007-2010 E93 BMW 328i 335i 335is - Convertible
Left Hand Drive ONLY

Wagner Tuning
Part #: 500001002KT
Price: $650.00 (USD) 
Direct Ship
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Quantity:   
Active Autowerke Performance Exhaust Header

Designed specifically for N52-powered BMWs, Active Autowerke has created a beautiful work of art. This performance header offers the perfect balance of sound and performance. With this header, you will have the benefit of increasing exhaust flow for a dramatic increase in power. Engineered to promote enhanced air flow, this system also reduces restrictions from the stock system that takes away horsepower. 

 

Key Features:

  • Dyno-Proven 20+ WHP gains over stock manifold
  • Improved power & torque curves throughout entire RPM range
  • Available for Coupe, Convertible, & Sedan
  • 100% 304 Brushed Stainless Steel finish
  • Mandrel-bent tubing for a smooth & unrestricted flow
  • Each header test fitted on N52 Header jig
  • Guaranteed to fit on BMW E9X 328i w/N52 engine
  • Includes all gaskets needed for installation
  • Two-year Limited Warranty

    Designed specifically for N52-powered BMWs, Active Autowerke has created a beautiful work of art. This performance header offers the perfect balance of sound and performance. With this header, you will have the benefit of increasing exhaust flow for a dramatic increase in power. Engineered to promote enhanced air flow, this system also reduces restrictions from the stock system that takes away horsepower. 

     

    Key Features:

  • Dyno-Proven 20+ WHP gains over stock manifold
  • Improved power & torque curves throughout entire RPM range
  • Available for Coupe, Convertible, & Sedan
  • 100% 304 Brushed Stainless Steel finish
  • Mandrel-bent tubing for a smooth & unrestricted flow
  • Each header test fitted on N52 Header jig
  • Guaranteed to fit on BMW E9X 328i w/N52 engine
  • Includes all gaskets needed for installation
  • Two-year Limited Warranty

This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.

Active Autowerke
Part #: aaexhhe9x328iKT
Price: $949.01 (USD) 
In Stock
Quantity:   
Cobb N55 Downpipe - E9x 335i/xi, E82 135i 2011+

Free up your BMW's N55 engine with the COBB 3" Downpipe! This direct replacement for the factory downpipe features a 200 cell count high flow catalytic converter and 304 stainless steel tubing. The CNC machined v-band flange and the cast merge section ensures perfect OEM-like fitment. All of these features combine to provide a free flowing exhaust outlet for high energy exhaust gases to reduce turbo back pressure and increase turbo efficiency. Off-the-shelf mapping available for Accessport part number AP-BMW-002 so it's perfectly tuned out of the box.

Features:

  • 200 Cell Count Magnaflow Catalytic Converter
  • 3" Diameter 304 Stainless Steel Tubing
  • Casted Merge Section at Cat-back Connection
  • CNC'ed V-Band Flange
     

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+ E82 BMW 135i 135is
2011 E90 BMW 335i 335xi 335i xDrive - Sedan
2011-2013 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
2011-2013 E93 BMW 335i - Convertible

CobbTuning
Part #: 5B2202
Price: $850.00 (USD) 
Ships on Jul 31, 2018
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Quantity:   
Wagner Downpipe With Sport Cat - N55 - E9x 135i, E9x 335i

Includes $25 Turner Motorsport gift card for the month of June!

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

Wagner Tuning
Part #: 500001005KT
Price: $790.00 (USD) 
In Stock
Quantity:   
Turner Motorsport 3

Factory downpipes and their catalysts are a choke point for exhaust gases. This restriction slows turbocharger spool and reduces efficiency, and has a significant impact on power. When modifying their N54, most enthusiasts quickly find OEM downpipes offer insufficient performance as power levels are increased, resulting in disappointing results from other modifications. While some find catless downpipes to be the answer, their benefits are increasingly failing to outweigh the downsides when used on the street. Exhaust volume is increased (combined with a full exhaust may be too much for sensitive ears), check engine lights are frequently illuminated, and emissions are greatly increased (a problem for the environment and in passing emissions testing).

Turner engineers designed downpipes that met a happy compromise - excellent flow with high performance 48-state legal catalytic converters. By utilizing cats, these downpipes offer much lower emissions than catless products (and in many cases, no check engine light), with little sacrifice to performance versus their catless counterparts. These high-flow units feature a 3" inlet, followed by a series of smooth radius bends and efficient catalyst, exits as a 2.5" to retain compatibility with popular cat-back exhausts (as well as factory exhaust piping).

We confirmed power and efficiency improvements are present on both a stock tune with even greater power to be found versus factory downpipes while utilizing a simple ECU tune. These gains were confirmed on our in-house Mustang AWD-500 dynamometer while running an off-the-shelf (no tuning trickery in these numbers) Cobb Stage 1 tune:

Stock wheel horsepower: 312hp @ 5700rpm
Stock wheel torque: 384ft/lb @ 4000rpm

Turner downpipe wheel horsepower: 333hp @ 6000rpm
Turner downpipe wheel torque: 390ft/lb @ 4100rpm

Max gains:
36hp
 @ 6500rpm
23ft/lb @ 6000rpm

Product features:

  • Large diameter 3" tubing and 200 cell high-flow catalytic converters - significantly reducing flow restriction found on factory downpipes
  • 304 stainless steel with beautiful quality TIG welds
  • Precise fitment - no wrestling to install, listening to clunks, or feeling vibration associated with ill-fitting downpipes
  • Uses factory clamp 11657620508 and factory gaskets 18307553601 (x2) and 18307553603 (x2). Install kit available here


Looking for even more power? Our knowledgeable sales staff is eager to help with your build - give us a call.
 

This item fits the following left-hand-drive BMWs with the N54 engine:
2008-2010 E82 BMW 135i 1M Coupe
2006-2010 E90 BMW 335i 335xi 335i xDrive - Sedan
2007-2010 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
2007-2010 E93 BMW 335i - Convertible

Turner Motorsport
Part #: 000932TMS01
Price: $795.95 (USD) 
In Stock
Free Shipping Free Shipping
Quantity:   
AR Design 3

Narrow exhaust pipes can be a major restriction to performance. If you are looking for top of the line downpipes, AR Design has you covered with their Hi-Flo Downpipes. These are perfect to add power, performance, and stunningly good looks. Made 100% in the United States of 3" 304 stainless steel tubing and expertly welded with some of the best looking welds on the market, the guys at AR Design are so confident in their material and build quality, they give you a lifetime warranty against manufacturing defects and a three year warranty against rust and corrosion.

These performance downpipes produce more power than the stock exhaust pipes and add a sporty exotic tone to your exhaust note. These downpipes also include a Race Catalytic Converter to ensure both high flow and emissions compliance for cars driven on the street in addition to the track.

These are available as stainless or with a ceramic coating rated up to 2000 degrees Fahrenheit. This helps keep the heat from radiating into the engine bay, keeping air intake temperatures much lower! Two coating options are available: Silver and Black.

Included in this kit:

  • 3" Downpipes
  • Race Cats
  • "Bomb-Proof" exhaust gaskets
  • Grade 10.9 metric hardware for high durability

Fits the following vehicles:
E9X BMW
 335i 335is with N54 engine
E82/88 BMW 1M, 135i with N54 engine

AR Design
Part #: E8XE9XN54CDP
Price: $1161.57 (USD) 
$1249 (Sale - Save 7%)
Direct Ship
E82 135i, E9X 335i Supersprint Turbo Cat-Less Downpipes

Special pricing! Free ground shipping! This turbo down pipe for the 135i and 335i is manufactured from 304 stainless steel using all mandrel bent tubing and each pipe is 65mm in diameter resulting in ultra low backpressure, assuring instant turbo spool up for maximum torques and horsepower gains for your 135i or 335i. The results of installing a complete turbo to tail pipe Supersprint system are a phenomenal 26 hp with a torque gain over 20 lb/ft.

The stock down pipes cause a major restriction in the exhaust flow. BMW's solution to deal with the limited space in the engine compartment is to crush the turbo outlet tubes to reduce the size of the tubing. Doing this created undesirable backpressure. For emission purposes the factory also incorporated built-in pre-cats directly after the turbo outlet ports. This make the exhaust gas backpressure rise to extremely high levels at all rpm and engine loads. This design retains excessive heat in the engine and affects performance in a negative way. The design of the Supersprint down pipes takes advantage of even the smallest space available and frees the exhaust gas flow dramatically. The SS pipe cross section (no crushed pipe) remains constant all along the down pipes and the pre-cats are totally eliminated.

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!

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.

 

section:downpipe

connects to:stock turbo outlet, Supersprint or any other section 1

material:T304 stainless steel

 

This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to TMS. You can download the waiver here.


This item fits the following BMWs:
2008-2012 E82 BMW 135i 1M Coupe
2007-2011 E90 BMW 335i 335xi 335i xDrive - Sedan
2007-2013 E92 BMW 335i 335is 335xi 335i xDrive M3 - Coupe
2007-2013 E93 BMW 335i - Convertible
Left Hand Drive ONLY

Supersprint
Part #: 980211KT
Price: $1623.16 (USD) 
$2028.95 (Sale - Save 20%)
Ships on Aug 13, 2018
Free Shipping Free Shipping
Quantity:   
AR Design 4

Narrow exhaust pipes can be a major restriction to performance. If you are looking for top of the line downpipes, AR Design has you covered with their Hi-Flo Downpipes. These are perfect to add power, performance, and stunningly good looks. Made 100% in the United States of 304 stainless steel tubing and expertly welded with some of the best looking welds on the market, the guys at AR Design are so confident in their material and build quality, they give you a lifetime warranty against manufacturing defects and a three year warranty against rust and corrosion.

These performance downpipes produce more power than the stock exhaust pipes and add a sporty exotic tone to your exhaust note. These downpipes are catless and offer higher flow with no spots of potential restriction. Downpipes without a catalytic converter are for off road use only and do not meet emissions standards.

These are available with a stainless steel finish or coated with a ceramic coating rated up to 2000 degrees Fahrenheit. This helps keep the heat from radiating into the engine bay, keeping air intake temperatures much lower! The ceramic coatings are available in 2 finishes, Silver and Black.

*This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.

Included in this kit:

  • 4" Catless Downpipe
  • "Bomb-Proof" exhaust gaskets
  • Grade 10.9 metric hardware for high durability

Fits the following vehicles:
2010-2013 E82/88 BMW 135i
2010-2013 E9x BMW 335i/xi with N55 Engine

AR Design
Part #: E8X9XN55UCDP
Price: $677.98 (USD) 
Direct Ship
Free Shipping Free Shipping
AR Design 3

Narrow exhaust pipes can be a major restriction to performance. If you are looking for top of the line downpipes, AR Design has you covered with their Hi-Flo Downpipes. These are perfect to add power, performance, and stunningly good looks. Made 100% in the United States of 304 stainless steel tubing and expertly welded with some of the best looking welds on the market, the guys at AR Design are so confident in their material and build quality, they give you a lifetime warranty against manufacturing defects and a three year warranty against rust and corrosion.

These performance downpipes produce more power than the stock exhaust pipes and add a sporty exotic tone to your exhaust note. These downpipes are catless and offer higher flow with no spots of potential restriction. Downpipes without a catalytic converter are for off road use only and do not meet emissions standards.

These are available with a stainless steel finish or coated with a ceramic coating rated up to 2000 degrees Fahrenheit. This helps keep the heat from radiating into the engine bay, keeping air intake temperatures much lower! The ceramic coatings are available in 2 finishes, Silver and Black.

*This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.

Included in this kit:

  • 3" Catless Downpipe
  • "Bomb-Proof" exhaust gaskets
  • Grade 10.9 metric hardware for high durability

Fits the following vehicles:
2007-2010 E82/88 BMW 135i, 1M(2011)
2007-2013 E9x BMW 335i/is with N54 Engine

AR Design
Part #: E8X9XN54UCDP
Price: $836.08 (USD) 
Direct Ship
Free Shipping Free Shipping
AR Design 4

Narrow exhaust pipes can be a major restriction to performance. If you are looking for top of the line downpipes, AR Design has you covered with their Hi-Flo Downpipes. These are perfect to add power, performance, and stunningly good looks. Made 100% in the United States of 3" 304 stainless steel tubing and expertly welded with some of the best looking welds on the market, the guys at AR Design are so confident in their material and build quality, they give you a lifetime warranty against manufacturing defects and a three year warranty against rust and corrosion.

These performance downpipes produce more power than the stock exhaust pipes and add a sporty exotic tone to your exhaust note. These downpipes also include a Race Catalytic Converter to ensure both high flow and emissions compliance for cars driven on the street in addition to the track.

These are available as stainless or with a ceramic coating rated up to 2000 degrees Fahrenheit. This helps keep the heat from radiating into the engine bay, keeping air intake temperatures much lower! Two coating options are available: Silver and Black.

Included in this kit:

  • 4" Downpipe
  • Race Cats
  • "Bomb-Proof" exhaust gaskets
  • Grade 10.9 metric hardware for high durability

Fits the following vehicles:
E9X BMW
 335i 335i with N55 engine
E82/88 BMW 135i with N55 engine

AR Design
Part #: E8XE9XN55CDP
Price: $929.07 (USD) 
$999 (Sale - Save 7%)
Direct Ship
AR Design 3

Narrow exhaust pipes can be a major restriction to performance. If you are looking for top of the line downpipes, AR Design has you covered with their Hi-Flo Downpipes. These are perfect to add power, performance, and stunningly good looks. Made 100% in the United States of 304 stainless steel tubing and expertly welded with some of the best looking welds on the market, the guys at AR Design are so confident in their material and build quality, they give you a lifetime warranty against manufacturing defects and a three year warranty against rust and corrosion.

These performance downpipes produce more power than the stock exhaust pipes and add a sporty exotic tone to your exhaust note. These downpipes are catless and offer higher flow with no spots of potential restriction. Downpipes without a catalytic converter are for off road use only and do not meet emissions standards.

These downpipes are resonated to help even out the exhaust flow and reduce drone at high RPMs.

These are available with a stainless steel finish or coated with a ceramic coating rated up to 2000 degrees Fahrenheit. This helps keep the heat from radiating into the engine bay, keeping air intake temperatures much lower! The ceramic coatings are available in 2 finishes, Silver and Black.

*This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.

Included in this kit:

  • 3" Catless Downpipe
  • "Bomb-Proof" exhaust gaskets
  • Grade 10.9 metric hardware for high durability

Fits the following vehicles:
2007-2010 E82/88 BMW 135i, 1M(2011)
2007-2013 E9x BMW 335i/is with N54 Engine

AR Design
Part #: E8X9XN54UCDPR
Price: $1161.58 (USD) 
Direct Ship
Free Shipping Free Shipping
E9X 335i N55 AFe MACH Force Downpipe

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

AFE
Part #: 48-36302KT1
Price: $595.00 (USD) 
Direct Ship
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Quantity:   
Active Autowerke Test Pipes - E9X M3 S65

These Active Autowerke Test Pipes are a simple way to eliminate your catalytic converters and free up some hidden horsepower! These test pipes are very easy to install, a perfect weekend project. All it takes is a few hand tools, a tape measure, and your preferred method of cutting away some of the stock exhaust system. 

Made of 100% Brushed stainless steel it bolts right up to the factory exhaust headers and provides a tight seal with the new set of TORCA clamps that are also included with the Test Pipe kit.

FEATURES:

  • Easy BMW horsepower gains
  • All stainless steel construction with a brushed finish
  • Precise and tight seal to factory headers
  • Beefy, support brace integrated
  • Z STYLE expansion slot for a tight seal
  • Industry standard TORCA Clamps included
  • Complete instructions included
  • Limited 2 Year Warranty included

This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.

Fits all E9X BMW M3's.

Active Autowerke
Part #: 11-019KT
Price: $399.01 (USD) 
Direct Ship
Quantity:   
E82 135i, E9X 335i N54 CP-E Downpipes With Sport Cats

Power Gain: +8-12hp
Torque Gain: +8-12ft-lbs

These N54 downpipes feature larger piping and cat sections 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 CP-E downpipes are built with a set of sport cats to keep the exhaust cleaner.

The CP-E downpipes are among the finest crafted turbo downpipes we have seen for the N54 engine. They use a CAM/CAD process, and automated manufacturing, that ensures a tight and precise tolerance for fitment and construction. This attention to detail and craftsmanship will never be found on the cheap auction sites. These pipes are made from 304 stainless steel, 3" diameter piping from the inlet to the cat, and tuned piping down to meet the stock exhaust section. These are a direct replacement for the stock downpipe and cat section, including fitment for Xi AWD models. No permanent modifications are made and the upgrade is completely reversible. You retain your factory oxygen sensors. Add a O2 bung kit if you wish to install a wideband sensor on the downpipe.

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 N54 engine:
2008-2012 E82 BMW 135i 1M Coupe
2006-2011 E90 BMW 335i 335xi 335i xDrive - Sedan
2007-2013 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
2007-2013 E93 BMW 335i - Convertible
Left Hand Drive ONLY

Custom Performance Engineering
Part #: BN54DPC
Price: $879.00 (USD) 
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AR Design 4

Narrow exhaust pipes can be a major restriction to performance. If you are looking for top of the line downpipes, AR Design has you covered with their Hi-Flo Downpipes. These are perfect to add power, performance, and stunningly good looks. Made 100% in the United States of 304 stainless steel tubing and expertly welded with some of the best looking welds on the market, the guys at AR Design are so confident in their material and build quality, they give you a lifetime warranty against manufacturing defects and a three year warranty against rust and corrosion.

These performance downpipes produce more power than the stock exhaust pipes and add a sporty exotic tone to your exhaust note. These downpipes are catless and offer higher flow with no spots of potential restriction. Downpipes without a catalytic converter are for off road use only and do not meet emissions standards.

These downpipes are resonated to help even out the exhaust flow and reduce drone at high RPMs.

These are available with a stainless steel finish or coated with a ceramic coating rated up to 2000 degrees Fahrenheit. This helps keep the heat from radiating into the engine bay, keeping air intake temperatures much lower! The ceramic coatings are available in 2 finishes, Silver and Black.

*This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.

Included in this kit:

  • 4" Catless Downpipe
  • "Bomb-Proof" exhaust gaskets
  • Grade 10.9 metric hardware for high durability

Fits the following vehicles:
2010-2013 E82/88 BMW 135i
2010-2013 E9x BMW 335i/xi with N55 Engine

AR Design
Part #: E8X9XN55UCDPR
Price: $929.08 (USD) 
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E82 128i, E9X 325i/328i/330i Supersprint Stainless Performance Headers

Special pricing! Free ground shipping!

Adding headers and removing catalytic converters from the exhaust is one of the top things to do to make more power. The factory put the cats in the stock exhaust manifold which restricts exhaust flow. But any race or track car will want to run without cats to gain the most power and torque. We used these on our in-house 325i project car on our way to 272hp. These Supersprint stainless headers are a true tubular, equal length design that bolt up for an immediate power gain. With no cats and a race exhaust you can expect to gain 15-20hp over the stock exhaust setup. Power gains with a cat section depend on the type of cat.

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 design because every aspect is done to such a high level. 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!

Section 1 / Catalytic Converter Options
You have a few different options for the exhaust immediately after the headers (known as 'section 1'):

 

Stock Section 1 Cats*Sport Cats*Straight Pipes**

* - you will need to have the rear O2 sensors extended to the new location of the cats. Special software or stand-alone engine management may be required to prevent fault codes and other conditions.
** - any cat-less section is sold expressly for race or on-track use only. Special software or stand-alone engine management may be required to prevent fault codes and other conditions.

Header Details

 

section:headers

connects to:stock or Supersprint section 1

material:T304 stainless steel

 

This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to Turner Motorsport. You can download the waiver here.


This item fits the following BMWs:
2008-2012 E82 BMW 128i
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i - Convertible

Supersprint
Part #: 789001KT
Price: $1275.96 (USD) 
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Active Autowerke Performance Exhaust Header - E9X N52, 128i 328i

The Active Autowerke N52 Performance Exhaust Header is specifically designed for BMW chassis which utilize the N52 inline 6-cylinder engine. With AA's performance header for the N52, you will be able to increase the exhaust flow of your BMW while gaining additional power – something that is difficult to accomplish on these vehicles.

This header was engineered to promote optimum flow and eliminate any restrictions that could possibly rob the engine of extra horsepower. Available for a number of BMW applications, the Active Autowerke N52 Performance Exhaust Header should be one of the first upgrades owners elect to make. Not to mention, the tremendous effects can be felt almost immediately.

KEY FEATURES:

  • Dyno-Proven 20+ WHP gains over stock manifold
  • Improved power & torque curves throughout entire RPM range
  • Available for Coupe, Convertible, & Sedan
  • Designed for RACE and/or TRACK USE
  • 100% 304 Brushed Stainless Steel finish
  • Mandrel-bent tubing for a smooth & unrestricted flow
  • Each header test fitted on N52 Header jig
  • Guaranteed to fit on BMW E9X 328i w/N52 engine
  • Includes all gaskets needed for installation
  • Two-year Limited Warranty

Fits the following vehicles:
E9X 328i
E88/82 128i

Active Autowerke
Part #: 11-022KT
Price: $899.01 (USD) 
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