AIRTEC Motorsport Downpipe Sports Cat for BMW G Series – M2, M3 & M4 BMW 320I 🔵 Blue ST logo

🔵 Blue ST logo

📌 Design Protection:

This SMD unit fully replaces both the bulb and lens

OEM Part Number: G1FY-4B425-AA

🌡️ Reduces Heat Soak – Keeps engine temps lower for better performance

AIRTEC Motorsport Downpipe Sports Cat for BMW G Series – M2, M3 & M4 BMW 320I 🔵 Blue ST logoBy replacing the restrictive primary catalytic converters located in the original downpipes with specially designed high flow sports cats, back pressure is reduced, which effectively improves the engines breathing by allowing it to expel gases more quickly. This in return means faster throttle response, increased power output and a more aggressive exhaust note. Complete with replacement fitting kit, the downpipes will mate to a standard or aftermarket