BMW B58 Spool 5 Inch Catted Downpipe with 200 Cell Euro 5 Cat

The Spool 5-inch B58 downpipe pairs a 200 cell Euro 5 catalytic converter with a big-diameter, in-house design for Gen 1 and Gen 2 B58 BMWs.

Why you need it

Reduced backpressure means faster spool and more power, and the 5-inch diameter gives a deeper, richer tone. Spool designed this pipe itself rather than rebranding a generic one, with a 2mm wall for strength and the largest flex section Spool knows of on a 5-inch B58 downpipe, so it lines up with your exhaust without a fight.

Fits

• BMW F22 / F23 M240i (2016 on)
• BMW F30 / F31 340i (2016 on)
• BMW F32 / F33 / F36 440i (2016 on)
• BMW G30 540i (2016 on)
• BMW G20 M340i, G22 / G26 M440i (2019 to 2023)
• BMW G42 M240i (2021 to 2023)
• BMW G01 X3 M40i and G02 X4 M40i
• BMW G05 X5 40i, G06 X6 40i and G07 X7 40i (2019 to 2023)
• BMW G29 Z4 M40i (2019 to 2023)
• BMW G11 / G12 740i and G70 740i
• BMW G14 / G15 / G16 840i (2019 to 2023)

Features

• 200 cell Euro 5 catalytic converter
• 5-inch diameter for a deeper tone
• 304 stainless steel with a 2mm wall
• Large flex section for easy alignment
• CNC-machined, welded-on Spool logo

Good to know

Fits Gen 1 and Gen 2 B58 including 2-port and 6-port. Does not fit Euro-spec cars with an OPF. Pair with a tune for the full gain. Intended for off-road and competition use only. Not legal for use on public roads in many areas. Professional installation is recommended.