B58 5 Inch Stainless Steel Downpipe Upgrade [Race Downpipes]

Spool 5 Inch B58 Downpipe

Why Settle for the Same Rebranded Downpipes?

Let’s face it—most downpipes on the market look the same. They’re just rebranded versions of the same old design with a small, rigid flex section and a laser-engraved logo slapped on. We’re tired of it too. That’s why we created something better. The SPOOL 5-Inch Downpipe is our own design, engineered in-house and quality you can trust. And unlike others, our logo is CNC machined and welded on, not laser engraved.

Why Choose the 5-Inch SPOOL B58 Downpipe?

• Unique, Deep Exhaust Tone: The larger 5-inch diameter creates a richer sound that stands out from the crowd.
• Easy Installation: Our flexible design makes alignment with your exhaust simple and stress-free—no more fighting with rigid downpipes.
• Real Performance Gains: Reduced backpressure means faster turbo spool, more power, and smoother flow. Pair it with a proper tune, and you’ll feel the difference and see significant HP & TQ gain.
• Built to Last:  Made from 304-grade stainless steel with a thicker 2mm design for unmatched strength and durability compared to the standard 1 and 1.5mm options in the market.
• Lifetime Warranty: Like all SPOOL products, this downpipe is covered by our lifetime warranty

What Makes It Special?

• Largest Flex Section on the Market: No one else offers this kind of flexibility on their 5-inch downpipe. It’s designed for easy installation and contributes to the unique sound.
• Exclusive Design: This is the only 5-inch B58 downpipe that looks like this, giving you a product that’s truly one of a kind and not some rebranded pipe that you see on the market.

This item fits the following BMWs:

• 2016+ F22/F23 BMW M240i & M240i xDrive
• 2016+ F30/F31 BMW 340i & 340i xDrive
• 2016+ F32/F33/F36 BMW 440i & 440i xDrive
• 2016+ G30 BMW 540i & 540i xDrive
• 2019–2023 G20/G22/G26 BMW M340i & M440i & xDrive
• 2019–2022 F22 BMW M240i & M240i xDrive
• 2021–2023 G42 BMW M240i & M240i xDrive
• 2019–2023 G05 BMW X5 40i & X5 xDrive40i
• 2019–2023 G07 BMW X7 40i & X7 xDrive40i
• 2019–2023 G29 BMW Z4 M40i
• 2016+ G11/G12 BMW 740i & 740i xDrive
• 2019–2023 G06 BMW X6 40i & X6 xDrive40i
• 2017+ G01 BMW X3 M40i
• 2018+ G02 BMW X4 M40i
• 2019–2023 G14/G15/G16 BMW 840i & 840i xDrive
• 2022+ G70 BMW 740i & xDrive

Non-BMW Models:

• 2019+ Toyota Supra (A90/A91)