Mercedes-Benz W218 CLS63 AMG M157 5.5L V8 Downpipe Exhaust System

Unleash the BiTurbo V8 — CEES Mercedes-Benz W218 CLS63 AMG M157 5.5L Downpipe System

Transform the sound and performance of your Mercedes-Benz W218 CLS63 AMG with the CEES high-flow downpipe system. Engineered specifically for the legendary M157 5.5L V8 BiTurbo engine, these downpipes eliminate the highly restrictive factory catalytic converters. Experience lightning-fast turbo spool, a massive increase in horsepower and torque, and an earth-shaking AMG V8 roar that will turn heads wherever you go.

🚀 Engineering Highlights

• Maximum Exhaust Flow: Precision mandrel-bent, high-flow optimized piping drastically reduces backpressure directly off the turbos, unlocking the true potential of the M157 engine.
• Master-Tier TIG Craftsmanship: Hand-welded from premium T304 Stainless Steel to withstand the extreme thermal loads generated by the 5.5L BiTurbo V8 during spirited driving and track days.
• Aggressive AMG Sound: Delivers a deep, guttural V8 growl with pronounced turbo whistle and aggressive deceleration pops and bangs.
• Precision Fitment: Engineered via high-definition 3D chassis scanning for a direct bolt-on installation to the factory catback exhaust or CEES aftermarket exhaust systems.

📊 Technical Specifications

✨ Bespoke Your Build — Chat with Our Specialists on WhatsApp

• WhatsApp: +86 15626172519
• Email: cees-exhaust@qq.com

📦 Shipping & Lead Times

• 🛠️ Production Time: Built to order in 2–4 weeks
• 🚚 Shipping: Premium express via DHL / FedEx / UPS — estimated 7–15 business days to your door

FAQ

1. Will this fit both RWD and 4MATIC models?

Yes, our design accommodates both the Rear-Wheel Drive and 4MATIC (All-Wheel Drive) drivetrains for the W218 CLS63 AMG.

2. Do I need an ECU tune after installing these downpipes?

Yes. Installing catless or high-flow catted downpipes will significantly alter the exhaust flow and trigger a Check Engine Light (CEL). A Stage 2 ECU tune is highly recommended to clear the CEL and fully optimize the engine for the increased airflow, yielding maximum horsepower gains.

3. What is the difference between Catless and High-Flow Catted options?

The Catless version provides maximum exhaust flow, the loudest V8 sound, and the highest power gains (ideal for track use). The High-Flow Catted versions (100/200/300 cell) use performance catalyst cores to reduce exhaust fumes and tone down the raspiness, making them better suited for street driving while still offering a massive upgrade over stock.

4. Are you a direct manufacturer?

Yes — as a direct manufacturer based in Guangdong, China, we eliminate middlemen to deliver premium, track-tested exhaust systems with strict in-house quality control and competitive pricing.