Description
Unlock true performance potential with the Palenon Performance 5-Inch B58 Downpipe, the largest and most optimized downpipe available for the B58 engine platform. Designed to support high horsepower builds and engineered for superior flow characteristics, this downpipe is a perfect fit for a wide range of modern Toyota Supra and BMW 3.0L applications.
Featuring a smooth stepped design—transitioning from 4.5” to a massive 5” before tapering to 4” and finally to the OEM 3.15” flange—this downpipe maintains larger internal diameters longer than typical designs, maximizing exhaust velocity and minimizing backpressure directly off the turbo.
Key Features:
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Largest B58 Downpipe Available: Industry-leading 5” diameter with smooth tapering for superior flow
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Enhanced Turbo Response: Reduced restriction means faster spool and improved throttle reaction
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Increased Horsepower & Torque: Engineered to unleash performance gains, especially when paired with supporting modifications
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Aggressive Exhaust Note: Delivers a deeper, throatier sound that enhances driving excitement
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Adjustable Outlet Design: The 3.15” outlet section is customizable to accommodate a 4” connection or aftermarket exhaust setups
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Easy Fitment: Direct bolt-on installation for both left- and right-hand drive vehicles
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Premium Construction: Full stainless steel tubing, stainless steel flex joint with internal liner, TIG welded, and back-purged for maximum durability
Why Choose Palenon Performance?
At Palenon Performance, innovation meets craftsmanship. Our 5-Inch B58 Downpipe is crafted from high-grade stainless steel using precise bending and TIG welding techniques to ensure the best performance, longevity, and fitment. Designed with racers and enthusiasts in mind, this downpipe blends cutting-edge design with quality materials for a truly refined driving experience.
Vehicle Fitment:
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Toyota GR Supra A90/A91 (2020+)
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BMW M340i / M340i xDrive (G20/G21/G26, 2019-2024)
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BMW M440i / M440i xDrive (G22/G23/G26, 2019-2024)
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BMW M240i / M240i xDrive (F22/F23 2016–2021, G42 2021-2024)
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BMW 340i / 340i xDrive (F30/F31, 2016-2019)
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BMW 440i / 440i xDrive (F32/F33/F36, 2016-2019)
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BMW 540i / 540i xDrive (G30, 2016-2024)
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BMW 640i / 640i xDrive (G32 GT, 2016-2023)
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BMW 740i / 740i xDrive (G11/G12, 2016-2022)
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BMW X3 M40i xDrive (G01, 2017–2022)
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BMW X4 M40i xDrive (G02, 2017–2020)
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BMW X5 40i / xDrive40i (G05, 2019–2024)
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BMW Z4 M40i (G29, 2019–2024)
Transform Your Driving Experience
Upgrade your B58-powered vehicle with the Palenon Performance 5-Inch Downpipe—a fusion of precision, durability, and raw performance. Whether you're chasing horsepower or refining your exhaust tone, this is the downpipe that delivers.
Order now and experience the next level in B58 performance.
