High-Flow Catless Downpipe — BMW S58 (M2 / M3 / M4 / X3M / X4M)

Details

Wake Up the S58 — Full Boost, Full Sound.

The single biggest bolt-on for your S58. Our high-flow stainless downpipe replaces the restrictive factory unit to free up exhaust flow, sharpen turbo spool, and unlock the deep, aggressive tone the S58 is capable of — the foundation every serious build starts with.

Why it's the first mod:

• T304 stainless construction — mandrel-bent, fully welded, built to last.
• Bigger bore, less restriction — improves spool and supports more power on a tune.
• Deeper, louder note — opens up the twin-turbo S58 sound instantly.
• Direct bolt-on fitment — reuses factory hangers and hardware, no cutting.

Fits: BMW G87 M2, G80 M3, G82 M4, F97 X3M & F98 X4M (S58). Choose your chassis at checkout.

Off-road / track use. Pairs perfectly with our Z-Pipe resonator delete and carbon tips.

🔧 30-day fitment guarantee.