BimmerWorld E46 M3 Street/Track Exhaust Kit - Diffuser Exit

Lightweight center-back 3.5" stainless steel exhaust system - save 55lbs!

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Based on our popular Race Version 3.5" exhaust, this section 2 + muffler has a slightly tamer sound while retaining many of the performance advantages.

We have had a lot of customers asking for our E46 M3 Race Exhaust, but in some more friendly version that was a little more street livable. But we aren't going to make some dumbed-down version with a similar name - instead our vision was a piece that was flexible enough to be truly streetable and livable for a larger group of people (we didn't say everyone - this is not a quiet exhaust still) while retaining most of the performance of the original BimmerWorld E46 M3 Race Exhaust.

After a bit of design, fabrication, and testing, we are very happy with the result! The Street/Track version of our exhaust bolts on to your stock or aftermarket Section 1 (we designed for typical aftermarket performance parts, so fitment may take some massaging). For you street-conscious types, this means you can keep your catalytic converters and Section 1 with resonators and the noise cancellation they provide, or alternate Euro Section 1 with cats. Past the stock Section 1, our Street/Track Exhaust does a quick merge and replaces the remainder of your exhaust (the most restrictive part of the factory system) with full 3.5" out to the exit.

Full 3.5" Diameter - It is extremely tight under the rear subframe, but we made it fit, and very close to the body of the car - no low hanging points to drag on your trailer, entrance curbing, etc. V-band clamps connect the exhaust sections for a clean, tight seal with no gasket required. The 3.5" diameter requires hand-piecing mandrel-bent pipe sections together instead of bending longer pipe sections, but we are not willing to sacrifice our goals for ease of production. The later merge area of this Street/Track Version of the exhaust slightly favors lower-end torque instead of the all-out high end power our Race Version provides.

Results - Center-back system weighs in at about 22 pounds (a full 55 pounds lighter than the factory exhaust). Power gain is approximately 10Hp and 10 ft-lb of torque versus a typical aftermarket exhaust, cars already equipped with the right parts to make big power or comparisons to a stock exhaust will yield even more power.

Design - The BimmerWorld E46 M3 Exhaust is 100% stainless steel for a long life. We utilize stock mounting points in both the center brace and rear of the car to support the exhaust properly. Stock center mounts are reused and new rear mounts and a stainless bolt-on rear hanger are included. V-band clamps are used throughout the system to join sections so quick removal at the track for repairs is easy.

The Street/Track Version of the BimmerWorld E46 M3 Exhaust consists of two sections that replace everything from behind the Section 1 on your OE-configuration exhaust. Fitment is tight against the body to minimize sections hanging low, which will disrupt airflow and scrape on race curbing. This is a pet peeve of ours with other so-called race exhausts and we worked hard to get it to fit snug on purpose.

+ Street Y-Pipe - A race-quality merge collector, specifically designed to increase exhaust scavenging.
+ Rear Muffler Section - We utilized a straight-through custom Magnaflow muffler that fits snugly in the left side of the factory exhaust space without modification. Exhaust flows on a very direct path out of the car, so it isn't quiet and it is not a good choice for your daily driver. The single tip is our standard slash-cut single-wall because we feel that a serious part like this exhaust doesn't need to be dressed up with a larger, heavy tip to look like it means business. This muffler exits through the left hole of our carbon rear diffuser (sold separately, click here).

Notice of Regulatory Non-Compliance. This exhaust system has been developed to work in conjunction with all factory emissions controls and equipment. Installation of this exhaust will not increase emissions nor cause a check-engine light or fault codes on a properly maintained vehicle. However, neither BimmerWorld nor the manufacturer can assure compliance with local or state regulations regarding sound levels or other compliance with vehicle inspection or registration. It is the responsibility of the vehicle owner to ensure his/her vehicle complies with all federal, state, county, or local regulations. Some suppliers will not ship to certain states, requiring extra delivery time. We will advise you of any delays.

Made in USA

BMW Fitments:

3 Series

E46 (01-06) > M3
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