Mercedes E63S / CLS63S AMG Downpipes (2014–2017 4MATIC) – M157 V8

🚨 PREORDER OPEN — SHIPS 10/15/2025

Preorder Price: $649 (MSRP $750). Limited stock — secure yours now.

M157 Downpipes for Mercedes E63S (W212) & CLS63S (W218) 4MATIC, 2014–2017. Designed to reduce backpressure, improve flow, and unlock the deep AMG exhaust note. Expect up to +100 HP / +140 lb-ft with ECU tuning.

🔊 Hear It & See the Upside

• Real gains: +100 HP / +140 lb-ft with tune
• Faster response: reduced backpressure & quicker spool
• Signature AMG tone: deeper, more aggressive exhaust
• Built right: TIG-welded 304 stainless steel, direct bolt-on

🔧 Technical Specs

• Material: high-grade stainless steel
• Diameter: 3-inch piping
• Welds: TIG-welded
• Finish: brushed/polished (batch dependent)
• Weight savings: ~10–15 lbs vs OEM
• Install time: ~2–3 hours (professional installation recommended)

📌 Compatibility

❓ Frequently Asked Questions

Will these downpipes work on the stock tune?
Yes, they’ll run on a stock ECU, but pairing with tuning unlocks the full +100 HP potential and keeps CEL issues in check.

Will installing these trigger a check engine light?
Yes, catless downpipes may trigger a CEL. This is resolved with O₂ spacers or ECU tuning.

When will preorders ship?
Preorders are guaranteed to ship starting October 15, 2025. Stock is limited.

🏆 Why Buy from BenzUnited

At BenzUnited, we specialize in Mercedes-AMG performance platforms, giving you confidence in every upgrade.

Our TIG-welded stainless downpipes are logo-branded for authenticity, ensuring durability and a professional look.

Every set is QC’d for fitment and backed by support from enthusiasts who know the platform.

We include free U.S. shipping with tracking, so you know exactly when your order arrives.

Reserve Today — $649 (MSRP $750) | Ships 10/15/2025