5 Inch B58 Downpipe for 2020+ Supra 3.0T & 2016-2025 BMW M340i, M440i, M240i, 340i, 440i, 540i, 640i, 740i, X5, Z4 - Palenon Performance

Unlock unparalleled performance with Palenon Performance’s 5-Inch B58 Downpipe, the largest on the market. Engineered for 2020+ Supra 3.0T & 2016-present BMW models including M340i, M440i, M240i, X5 40i, Z4, 440i, 540i, 640i, and 740i, this b58 downpipe features a smooth transition from 4.5” to 5” to 4” and ultimately to the OEM connection of 3.15”. Unlike other downpipes that quickly neck down to 3” at the flex joint, our design maintains larger diameters throughout, ensuring optimal flow right after the turbo.

Crafted from full stainless steel with a stainless steel flex joint and an inner stainless liner, this downpipe is TIG welded and back-purged for exceptional strength and longevity. Experience a deeper exhaust note, improved spool response, and increased power with easy installation compatibility for both factory and aftermarket exhaust systems.

Explore

• Our B58 Downpipe Collection

Features

• Maximum Flow: 5” diameter with smooth transitions enhances exhaust flow and reduces restriction.
• Faster Spool: Improved turbo response and quicker spool times.
• Increased Power: Noticeable horsepower and torque gains.
• Aggressive Exhaust Note: Enjoy a richer, more aggressive sound.
• Customizable Fit: The end section (3.15”) can be adjusted to fit custom exhaust setups or swapped to a 4” diameter.
• Easy Installation: Fits both right and left-hand drive vehicles without modifications.

Profile: Installing b58 catless downpipes will trigger a check engine light (CEL) due to the absence of OEM catalysts. To eliminate the CEL without a tune, we offer a CEL Delete Kit featuring O2 sensor spacers that comply with BMW’s emissions parameters, effectively removing the CEL.

Why Choose Palenon Performance?

At Palenon Performance, we pride ourselves on crafting premium exhaust solutions. Our 5-Inch B58 Downpipe is built with top-grade stainless steel and advanced manufacturing techniques for unmatched durability and performance. With a commitment to innovation and customer satisfaction, our skilled team continually pushes the limits to deliver high-quality, high-performance parts.

Upgrade your BMW’s exhaust system with Palenon Performance’s 5-Inch B58 Downpipe and experience the ultimate in power and sound. Order today to transform your driving experience!

Fitment

• 2019+ G20, G22 & G26 BMW M340i & M440i & xDrive
• 2019+ F22 BMW M240i & xDrive
• 2021+ G42 BMW M240i & xDrive
• 2019+ G05 BMW X5 40i & xDrive
• 2019+ G29 BMW Z4 M40i
• 2019+ G14/G15/G16 840i & xDrive
• 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
• 2016+ G32 GT BMW 640i & 640i xDrive
• 2016+ G11/G12 BMW 740i & 740i xDrive
• 2020+ Supra A90/A91 3.0T