$595.00 USD
$595.00 USD
















RVNG B58 Performance Midpipe
Unlock the true voice of your B58 with the RVNG 240, 340i, and 440i Midpipe. Engineered for enthusiasts who crave more character and volume from their BMW, this midpipe transforms the exhaust tone into a deep, aggressive growl—without sacrificing daily drivability.
By removing the factory resonators, the RVNG Midpipe allows your B58 to breathe and bark like it should. Paired with the OEM muffler, you keep full control of exhaust volume. Dial it up in Sport Plus for an exhilarating tone that commands attention, or cruise under the radar in Comfort mode when you’re keeping it chill.
Built to kill competition, tuned for balance—this is how the B58 was meant to sound.
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$595.00 USD
$595.00 USD
This product can expose you to chemicals such as lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
For a complete list of chemicals known to cause harm, visit https://www.p65warnings.ca.gov/chemicals.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell, install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public roads. Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB), it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local regulations before purchasing or installing emissions-related products.
All performance, racing, or competition parts sold by this company are intended solely for off-road, closed-course, or competition use on vehicles that are never registered or used on public highways.
Kies Motorsports, LLC sells and markets these products for lawful use only. We do not condone or authorize the use of emission-control defeat devices or any modification that violates the Clean Air Act or state regulations.