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OBX Catback Exhaust FITS 02-05 A4 1.8T Quattro B6 M/T A/T 03-04 S4 A/T Audi

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Product Description

OBX Racing Sports exhaust systems feature high performance straight-flow technology to unleash the engine's maximum horsepower. 
Increases velocity and delivers a measurable boost on the low as well as top end. OBX smooth-flow sound gives it a distinctive tone. 
Each system is individually hand built from SUS304 high grade fully stainless steel. Extremely competitive pricing that won't break your bank.
Needless to say, this is what you can expect from a vendor of the world's largest automobile OEM manufacture supplier.

Application Fit For:

  • 2002 thru 2005 Audi A4 1.8T Quattro B6 (Auto Transmission/Manual Transmission)
  • 2003 thru 2004 Audi S4 B6 (Auto Transmission)

Approximated Dimensions:

  • Adapter Pipe Outer Diameter: 2.5"
  • Y-Pipe Inner Diameter:  2.0"
  • Muffler Inlet Inner Diameter:  2.0"
  • Muffler Tip Outer Diameter:  3.5"

General Information:

  • Each OBX™ system is designed and fine tuned for your specific application to maximize performance as well as precision fitment
  • Dual TIG weld, made from SUS304 stainless steel, CNC mandrel bent pipes, stainless flanges as well as high quality mirror polished stainless steel muffler and tip(s) for durability, longevity, and performance
  • OBX™ Systems have a straight forward design, which uses factory bolt-on/mount-on hanger locations (in most applications), which means no drilling and no cutting. Easy professional-like installation and convenience
  • All OBX™ systems are built with the highest quality, care and detail. Uncompromised Quality Assurance is Guaranteed
  • Extremely competitive pricing that won't break your bank.
  • All OBX™ systems come with a written limited lifetime warranty, which says its all
  • Flat rate shipping fee only apply to those package shipping within the lower 48 United States


 Shipping Term:
Package over $100.00 in value will require a signature, when deliver.  Please arrange for someone to sign for the package(s).We will email the tracking number to you the following day after the package is ship out.  If you don’t get it within one day, message us for the tracking number.
If the posting is listed for free or flat rate shipping fee, this only apply to the lower 48 US States.
The following shipping destination requires contacting us for shipping quote:


  • Alaska, Hawaii, Puerto Rico, Guam, Saipan and US Virgin Island
  • All US Military Base
  • All International Buyers


International buyers will require to research if their country charges custom fee. 




“For off-road competition/racing use only. This product is not intended to be installed on vehicles registered for highway use. LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES THAT MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY.”

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Product Reviews

  1. more of a review for mega tuning as a whole. 4 Star Review

    Posted by on 24th Feb 2015

    I've used OBX exhausts on several different vehicles. At the price point and quality aspect they can't be beat. I've used far more expensive setups like MagnaFlow and others and I always find myself happier with the performance and sound of OBX.

    As far as Mega Tuning, these guys are amazing!! Prices are near impossible to beat, always receive orders within a week no matter the size! I could go on and on. Only aspect they are lacking is that tracking numbers are never provided as promised. However at this point I don't care. They have never let me down!!

    Bravo gentleman......Bravo!

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