BMW M3 G80 & M4 G82 by FORM (S58) Decat Catless Downpipes with Heat Shield by FORM (2021+)

Reduce backpressure by eliminating the restrictive catalytic converter in the factory downpipe which results in a faster turbo spool, an increase in power of 20/30hp+ with a tune and a more appealing exhaust note.

Handmade from T304 stainless steel and CNC’d flanges constructed from billet.

The S58 Heat Shielded Downpipe, finished in F1 Standard Heat Shielding.

Reducing engine bay temperatures, heatsoak and faster gas expulsion from the turbo.

• Reducing Heat Soak
• Maximising Exhaust Gas Flow
• OEM Fitment
  

This Downpipe is compatible with all new generation M3 & M4 models.

Compatibility