Unleash Aggressive Sound & Performance with Our 4.5" B58 Downpipe

Unlock the full potential of your BMW or Toyota Supra with the Palenon Performance Version II 4.5" Downpipe—engineered specifically for Gen 1 & Gen 2 B58 engines. Compatible with 2016–present BMW models—including the 340i, 440i, M340i, M440i, M240i, X5 40i, Z4, 540i, 640i, 740i—and the 2020+ Toyota Supra 3.0T, this high-flow downpipe is designed to replace the restrictive OEM catalytic converter and dramatically enhance turbocharger efficiency.

Constructed from robust 304-grade stainless steel and featuring precision-formed 4.5” smooth radius bends, it delivers quicker turbo spool, increased horsepower, and a deeper, more aggressive exhaust tone. Its direct-fit design ensures easy installation and seamless compatibility with both OEM and aftermarket exhaust systems—making it the perfect upgrade for performance enthusiasts seeking maximum power and sound.

Check Here If you have Gen3 Models

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

Features

• Faster Spool: Achieve quicker turbo response with reduced exhaust backpressure.
• Reduced Restriction: Enhanced flow for improved power gains.
• Increased Power: Gain noticeable horsepower and torque increases.
• Aggressive Exhaust Note: Enjoy a more dynamic and thrilling exhaust sound.
• Easy Installation: Fits both right and left-hand drive models with no modifications needed.
• Versatile Fitment: Compatible with factory and aftermarket exhaust systems.

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

The installation of catless downpipes will result in an inevitable check engine light (CEL) as the DME will detect that emissions are not being burnt up by the OEM catalyst. To remove this CEL without having to tune it out we offer the CEL Delete Kit which is comprised of O2 sensor spacers specifically calibrated to comply with BMW's parameters for a functioning catalyst. These install into the post-catalyst O2 sensor bungs, effectively removing the CEL that would otherwise appear.

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.

Why Choose Palenon Performance?

At Palenon Performance, we are dedicated to excellence in our exhaust products. Our Version II B58 Downpipe is crafted with top-grade stainless steel and advanced manufacturing techniques for unmatched strength and performance. Our skilled engineers and designers push the boundaries of innovation to deliver high-quality, high-performance parts. With rigorous testing and a commitment to customer satisfaction, Palenon Performance stands as the trusted choice for superior exhaust solutions.

Transform your BMW’s performance with Palenon Performance’s Version II B58 Downpipe. Order now and feel the difference!

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
• 2017 – 2022 G01 BMW X3 M40iX xDrive
• 2017 – 2020 G02 BMW X4 M40iX xDrive
• 2019-2024 G05 BMW X5 40i & xDrive
• 2019-2024 G29 BMW Z4 M40i
• 2020+ Supra A90/A91 3.0T