Fabspeed BMW Z4 M40i Sport Cat Downpipe (2019+)

The Z4 M40i responds well to a better downpipe, both in how it sounds and in how much power the B58 makes. Fabspeed's Sport Cat Downpipe swaps the restrictive factory converter for the largest, highest-flowing cats that will fit the M40i. You get a more aggressive exhaust note and real power while keeping catalytic converters on the car.

What you get

• German-made HJS converters, 200-cell, trimetallic, and Euro 6 EC certified.
• 4" pipe from the engine to the cat, stepping to 3" tubing from the cat rearward.
• The largest cats that fit the 3.0L M40i, for more flow and more catalyst surface area.
• No check engine light, with emissions compliance maintained, according to Fabspeed.

Brand: Fabspeed · Part #: FS.BMW.Z4.SC

For off-road / competition use only. Not legal for use on public roads in the United States, including California.

• Ships from the brand or distributor, usually in 3–7 business days.
• Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.