BMW B58 Gen 1 / Gen 2 4.5in Race Downpipe V1 - M340i, M240i, 540i

The Palenon Performance Version I 4.5in B58 downpipe replaces the restrictive OEM catalytic converter on 2016+ B58 BMWs to improve turbo efficiency, spool and sound.

Why you need it

Smooth radius bends and 4.5in 304 stainless construction give faster spool times, more power and a bold exhaust sound, and it works with factory and aftermarket exhausts.

Fits

• 2016+ F20 M140i; 2016-2024 F22 / F23 M240i; 2021+ G42 M240i
• 2016-2019 F30 / F31 340i; 2020-2024 G20 / G21 M340i
• 2016-2019 F32 / F33 / F36 440i; 2020-2024 G22 / G23 / G26 M440i
• 2016+ G30 540i; 2016-2023 G32 640i GT; 2016-2022 G11 / G12 740i
• 2019+ G14 / G15 / G16 840i
• 2018-2024 G01 X3 M40i and G02 X4 M40i; G05 X5 40i; G06 X6 40i; G07 X7 40i
• 2019-2024 G29 Z4 M40i
• Also fits the Toyota GR Supra A90 / A91 3.0T
• xDrive versions included

Features

• Choose catless or high-flow catted
• 4.5in 304-grade stainless steel, smooth radius bends
• Fits RHD and LHD with no modifications
• Optional CEL delete kit (select in options)

Good to know

Intended for off-road and competition use only. Not legal for use on public roads in many areas. The catless version will set a check engine light; the CEL delete kit may not clear it on 2019+ vehicles. The high-flow catted version is not certified emissions legal. A supporting tune is recommended.