AMS S58 Air Intakes, Open Airbox | BMW M2 / M3 / M4 G8X

The AMS Performance BMW G8X M2/M3/M4 S58 Air Intakes are built for maximum airflow into the twin turbo S58. A large 3.5" carbon fiber intake tube and smooth transition 4-ply hump hose silicone couplers feed oversized cast aluminum turbo inlet elbows that are up to 128% larger in cross section than stock, giving a direct path to the compressor wheels.

On the dyno, AMS measured a peak gain of 86 whp over the stock intakes and an average of 66 whp above 5000 rpm, for a broader powerband to redline. Intake restriction drops by up to 48% compared to stock.

This version uses an open top airbox with hardware, for more induction sound and a direct look at the filters. The dry filter media is reliable and easy to clean, and AMS provides detailed instructions for a simple install.

Features

• Up to 86 whp peak gain (AMS dyno)
• Average 66 whp gain above 5000 rpm
• 3.5" carbon fiber intake tubes
• Turbo inlet elbows up to 128% larger
• Up to 48% less restriction
• Open top airbox

What Is Included

• 3.5" carbon fiber intake tubes
• Cast aluminum turbo inlet elbows
• Dry media air filters
• 4-ply hump hose silicone couplers and hardware
• Open top airboxes with hardware

Specs

FAQ

Lids or open top?
Lids seal out engine bay heat and look finished; the open top gives more sound.

Do I need a tune?
No tune is required to install, though tuned cars benefit most.

How do I clean the filters?
The dry media cleans easily without oil.

Fitment Notes

Fits 2021-2026 BMW M3 (G80), M4 (G82/G83) and 2023-2026 M2 (G87) models sold in the US with the S58. Browse all AMS Performance parts.

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.