ICP BMW B58 Downpipe (F/G-Series)

The ICP BMW B58 Downpipe (F/G-Series) is one of the most effective performance upgrades for BMW’s turbocharged B58 engine. By replacing the restrictive factory downpipe, this precision-engineered unit improves exhaust flow, reduces turbo lag, and unlocks significant horsepower and torque gains when paired with tuning software.

Constructed from high-grade stainless steel with CNC-machined flanges and TIG welds, the ICP B58 Downpipe ensures durability and OEM-like fitment. Available in catless and high-flow catted configurations, each version comes with an integrated heatshield for improved thermal management.

Fitment:

• BMW 340i (F30/F31/F34) 2016–2019
• BMW 440i (F32/F33/F36) 2016–2019
• BMW 540i (G30) 2017+
• BMW 740i (G11/G12) 2017+
• BMW M240i (F22/F23) 2017–2020
• BMW X3/X4 M40i (G01/F26) 2018+
• BMW X5/X6 40i (G05/G06)
• 2019+Toyota Supra A90 (B58) 2020+

Key Features:

• Designed for BMW B58 turbocharged inline-6
• Catless and catted options with heatshield
• Direct bolt-on with OEM-style fitment
• Gains of +30–40 HP with tune
• Aggressive exhaust tone and faster turbo spool