Ultimate Performance Gen2 - ICP BMW S58 Downpipe 3.5" (M3/M4 – G80/G82/G83)

Upgraded 3 Layers of heatshield isolation

SS316 Flanges and SS304 Piping

The Gen2 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.

COMMENDED ONLY FOR 800+ HP PROJECTS

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

Colors are for demonstration, golden cerakote coating available pn demand. (Optional)