ICP BMW S58 Downpipe (M3/M4 – G80/G82/G83)

The ICP BMW S58 Downpipe is a precision-engineered upgrade for the latest G80 M3 and G82/G83 M4. By replacing the restrictive stock downpipes, this system improves exhaust flow, reduces turbo lag, and unlocks significant horsepower and torque gains when paired with ECU tuning.

Built from high-grade stainless steel with CNC flanges and TIG welds, the ICP S58 Downpipe provides long-lasting durability and OEM-like fitment. Available in catless and catted versions, each includes an integrated heatshield for superior thermal management.

Fitment:

• BMW M3 (G80/G81) 2020+
• BMW M4 (G82/G83) 2021+

Key Features:

• Built for BMW S58 twin-turbo inline-6 (G-Series M3/M4)
• Catless and catted options with heatshield
• Gains of +40–60 HP with ECU tune
• Aggressive exhaust note and sharper turbo response
• Direct bolt-on installation