ICP BMW N55 Downpipe (F26 – X4 M40i,iX)

The ICP BMW N55 Downpipe is a direct-fit upgrade for the F26 BMW X4 M40i & M40iX. Designed to improve exhaust flow and turbo spool, this high-flow downpipe unlocks horsepower and torque gains when paired with a tune, while also enhancing the aggressive character of the X4’s exhaust note.

Made from 304 stainless steel with CNC flanges and TIG welds, the ICP N55 Downpipe provides strength and OEM-style fitment. Both catless and catted configurations are available, each with integrated heatshielding.

Fitment:

• BMW X4 M40i / M40iX (F26) 2015–2018

Key Features:

• Designed for BMW N55 turbo inline-6 (F26 X4 M40i)
• Catless and catted options with heatshield
• Gains of +25–35 HP with tune
• Sharper turbo response and induction sound
• Direct bolt-on fitment