Momentum B58 5" Race Downpipe

$299.00

Shipping calculated at checkout.

Momentum B58 5" Race Downpipe

Unleash the full potential of your B58-powered BMW or Toyota Supra with the Momentum B58 5" Race Downpipe. Designed to significantly outflow the restrictive factory downpipe, this upgrade improves turbo efficiency, reduces backpressure, and delivers sharper throttle response, stronger top-end pull, and a more aggressive exhaust note.

Constructed from high-quality T304 stainless steel, this downpipe is built for long-term durability, corrosion resistance, and reliable performance under demanding conditions. Whether you are running a stock turbo setup with supporting modifications or building a more aggressive tuned application, this downpipe is an ideal upgrade for getting the most out of the B58 platform.

For customers looking for better thermal control, a heatshielded option is also available. This version helps reduce radiant heat in the engine bay and is a great choice for street-driven builds, hotter climates, and higher-performance applications.

Key Features

Large 5-inch high-flow design
Constructed from T304 stainless steel
Increased exhaust flow and reduced backpressure
Faster turbo spool and improved throttle response
More aggressive and deeper exhaust tone
Precision welds and direct bolt-on fitment
Available with an optional heatshielded version
Excellent upgrade for tuned and modified B58 vehicles

Applications

Compatible with BMW and Toyota vehicles equipped with the B58 3.0L turbocharged inline-6 engine, including both Gen 1 and Gen 2 configurations.

B58 Gen 1 Fitment:

2016-2018 BMW 340i / 340i xDrive
2017-2020 BMW 440i / 440i xDrive
2017-2019 BMW 540i / 540i xDrive
2018-2019 BMW 640i GT
2016-2019 BMW 740i / 740i xDrive
2018-2019 BMW X3 M40i
2019 BMW X4 M40i
2016-2018 BMW 140i
2016-2021 BMW M240i / M240i xDrive
2017-2020 BMW 340i GT

B58 Gen 2 Fitment:

2019+ BMW Z4 M40i
2020+ Toyota GR Supra 3.0 / 3.0 Premium
2020+ BMW M340i / M340i xDrive
2021+ BMW M240i / M240i xDrive
2020+ BMW 540i / 540i xDrive
2020+ BMW 740i / 740i xDrive
2020+ BMW 840i / 840i Gran Coupe
2019+ BMW X3 M40i
2019+ BMW X4 M40i
2019+ BMW X5 xDrive40i
2020+ BMW X6 xDrive40i
2019+ BMW X7 xDrive40i

Please Note

Fitment may vary depending on chassis, drivetrain, model year, and regional market specifications. Please confirm compatibility prior to ordering.

Off-Road Use Only

This product is intended for off-road and motorsport use only and may not be legal for use on public roads or emissions-controlled vehicles in your area.

To maintain the beauty and integrity of your purchase, we recommend treating it with care. Simple maintenance practices, such as gentle washing and proper storage, can effectively preserve the longevity of your favorites. We encourage you to refer to the care instructions included with each item, designed to help you keep your purchase in top condition.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible. Need to return something? Just let us know.

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