ICP BMW N55 Downpipe (E-Series – 135i/335i/X1 )

The ICP BMW N55 Downpipe for the E-Series 135i, 335i, and X1 unlocks power and sound by improving exhaust flow and turbo efficiency. With tuning, this upgrade delivers sharper throttle response, stronger mid-range torque, and up to +30 HP gains.

Constructed from high-grade stainless steel with TIG welds and CNC-machined flanges, the ICP N55 Downpipe is built for durability and OEM-style fitment. Both catless and catted versions include an integrated heatshield.

Fitment:

• BMW 135i (E82/E88) 2010–2013
• BMW 335i (E90/E92/E93) 2010–2013
• BMW X1 35i (E84) 2011–2015

Key Features:

• Designed for BMW N55 turbo inline-6 (E-Series)
• Catless and catted options with heatshield
• Gains of +25–35 HP with tune
• Enhanced induction and exhaust note
• Direct bolt-on, no cutting or welding