HJS ECE Downpipes 3,15″ BMW M2/M4 CS/Competition OPF S55B30A 90822040 (ECE)

HJS ECE Downpipes 3,15″ BMW M2/M4 CS/Competition OPF S55B30A 90822040 (ECE)

A downpipe is one of the most popular turbo-engine upgrades. A freer-flowing exhaust side can add a sportier sound while supporting throttle response and power potential. Read more in the Futurez downpipe guide.

This product includes model-specific ECE approval. The ECE version is intended for legal road use in the vehicle applications covered by the approval.

HJS ECE Downpipes 3,15″ BMW M2/M4 CS/Competition OPF S55B30A 90822040 (ECE) offers vehicle-specific bolt-on fitment in place of the original downpipe. Its larger diameter and freer-flowing shape reduce back pressure after the turbocharger. This can sharpen turbo response and reduce exhaust-side thermal load, particularly on tuned engines.

• Pipe size 80 mm / 65 mm
• Vehicle-specific construction
• Freer-flowing design reduces exhaust back pressure
• Helps reduce thermal load on the turbocharger and exhaust side
• Manufactured from stainless steel
• Bolt-on fitment

Examples of compatible vehicles

• BMW M2 Competition/CS F87 S55B30A OPF (2018–2021)
• BMW M4 Competition/CS F82 S55B30A OPF (2016–2020)

Before ordering, verify the engine and body version, model year and the exact vehicle coverage of the selected catalytic-converter approval.