Unlock unparalleled performance with Palenon Performance’s 5-Inch bmw B58 Downpipe, the largest on the market For Gen1 & Gen2 BMW. 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.

Check Here If you have Gen3 Models

For Extra Ordinary Performance with Downpipe, We recommend our Air Intake with Downpipe

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: 30HP+ Noticeable horsepower and torque gains with proper tune.
• Warm and Deep Exhaust Note: Enjoy a richer, more warm sound.
• Easy Installation: Fits both right and left-hand drive vehicles without modifications.

Our racing-grade downpipes are expertly crafted from premium stainless steel, using precise and standardized bending techniques to ensure optimal performance and thrilling exhaust note. Our downpipe pricing is U.S. market guaranteed. With an unwavering commitment to both price and quality, we adhere to a "customer-first" standard, ensuring that our products exceed expectations without compromise.

Cel Delete Kit

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.

Vehicles manufactured from 2019 onward are highly sensitive, and the Check Engine Light (CEL) may not always be eliminated. However, the modification may help delay its activation.

Review & Installation Video

Why Choose Palenon Performance?

At Palenon Performance, we pride ourselves on crafting premium exhaust solutions. Our 5-Inch bmw 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

• 2016+ F20 BMW M140i
• 2016-2024 F22/F23 BMW M240i & M240i xDrive
• 2021-Present G42 BMW M240i & xDrive
• 2016-2019 F30/F31 BMW 340i & 340i xDrive
• 2020-2024 G20, G21 BMW M340i & xDrive
• 2016-2019 F32/F33/F36 BMW 440i & 440i xDrive
• 2020-2024 G22 G23 & G26 BMW M440i & xDrive
• 2016-Present G30 BMW 540i & 540i xDrive
• 2016-2023 G32 GT BMW 640i & 640i xDrive
• 2016-2022 G11/G12 BMW 740i & 740i xDrive
• 2019-Present G14/G15/G16 840i & xDrive
• 2018 – 2024 G01 BMW X3 M40iX & xDrive
• 2018 – 2024 G02 BMW X4 M40iX & xDrive
• 2019-2024 G05 BMW X5 40i & xDrive
• 2019-2024 G29 BMW Z4 M40i
• 2020+ Supra A90/A91 3.0T