Active Autowerke BMW F80 M3 F82 F83 M4 Equal Length Gen 2 Midpipe
Price range: 1,989.99€ through 2,249.99€
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The BMW F80 M3 F82 F83 M4 Equal Length Gen 2 Midpipe by Active Autowerke is the ultimate exhaust upgrade for S55-powered M3 and M4 models, designed to eliminate the uneven exhaust pulses that create the infamous high-pitched “weed-eater” sound. The factory S55 exhaust system suffers from an unequal downpipe length between the front and rear banks, causing an inconsistent and unbalanced exhaust note. This innovative Gen 2 midpipe corrects this issue by equalizing the exhaust pipe lengths before merging, ensuring a smoother, deeper, and more aggressive inline-6 tone.
Featuring a patented sinusoidal crossover design, this midpipe optimizes exhaust flow while maintaining compatibility with existing rear exhaust systems—allowing owners to upgrade without a full exhaust replacement. Engineered for precise fitment on BMW F80 M3, F82, and F83 M4 models, the Equal Length Gen 2 Midpipe significantly enhances exhaust sound quality and performance, delivering an instant transformation that’s noticeable the first time you hit the throttle. Whether on the street or track, this midpipe is the perfect solution for S55 enthusiasts looking for a refined, high-performance exhaust upgrade.
KEY FEATURES:
- Lighter weight than factory system
- Quicker turbo spool
- Increased low end and mid-range power
- Equal length design eliminates the pulsing sound caused by the unequal length down pipes
APPLICATIONS
- 2015-2020 BMW M3 Sedan
- 2015-2020 BMW M4 Coupe
- 2015-2020 BMW M4 Convertible
- 2016 BMW M4 GTS Coupe
- 2019-2020 BMW M4 CS Coupe
NOTES:
Due to potential variations in exhaust system fitment, professional installation is recommended for optimal results.
ADDITIONAL INFORMATION:
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PREPREG is a common term for a reinforcing fabric such carbon which has been pre-impregnated with a resin system. This resin system (typically epoxy) already includes the proper curing agent. As a result, the prepreg is ready to be laid into the mold without the addition of any more resin. In order for the laminate to cure, an autoclave production process is used, a combination of high pressure and heat.
- Maximum strength and performance characterictics. In a hand layup production process, it is difficult to achieve 50% fabric and 50% resin content. Typical hand laminates, even when vacuum bagged, end up with a significant amount of excess resin. Excess resin increases brittleness and reduces overall strength properties. On the other hand, most prepregs contain around 35% resin. This is ideal for maximum cured properties and generally impossible to achieve in normal hand lamination.
- Uniformity and repeatability. The prepreg is of uniform thickness and each part coming out of the mold may theoretically be the same. Vacuum bagging technology may have some errors in processing, but prepreg ensures production consistency.
- Reduce curing time. After the thermal curing cycle, no need to wait for the standard 48 hours can be fully cured.
- Aesthetics. Although prepreg processing still requires mold preparation and demoulding, prepreg processing eliminates air bubbles, makes it easier to obtain a smooth, glossy surface as well as eliminates any seaming lines.
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We offer free tracked shipping on all orders within mainland EU. Orders to remote areas such as Malta, Cyprus, and Iceland may incur a surcharge. Worldwide shipping is also available—please contact us for a quote.
Most orders dispatch within one business day (Monday to Friday). EU delivery takes 3–5 working days from dispatch, and tracking details will be provided via email once your order has shipped.
Please note that import taxes may apply outside the EU, and these are the responsibility of the buyer. Some items may ship directly from our suppliers and may have varying delivery times. If an item is out of stock, we will contact you to discuss the available options.
RETURNS
Changed your mind? You can return unused, uninstalled items in original packaging within 30 days of delivery. Return shipping is the customer’s responsibility unless the item is faulty.
Custom, used, or built-to-order items are non-returnable.
Once we receive and inspect your return, refunds are typically processed within 10 business days.
If your item is damaged or incorrect, contact us within 48 hours with photos and order details.
WARRANTY
All VA and VA Motorsports products come with a 1-year limited warranty covering manufacturing defects and fitment issues. For third-party items, warranty terms vary by brand—please check the product listing or contact us for details.
This warranty does not cover wear and tear, incorrect installation, cosmetic damage, labor, or third-party costs.
To start a claim, email us with your order number, issue description, and photos. If the claim is approved, we’ll offer a replacement, store credit, or a refund.