BenzUnited Parts
Mercedes W213 E63 Catless Downpipes / E63 AMG S M177 2018–2022
Mercedes W213 E63 Catless Downpipes / E63 AMG S M177 2018–2022
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Off-road and race use only. Not legal for street use or emissions-controlled vehicles. Intended for closed-course competition or off-road applications where permitted.
High-flow performance downpipes for Mercedes-AMG W213 E63 & E63S (M177) — engineered for improved exhaust flow, sharper response, and a deeper, controlled exhaust note while preserving OEM-like drivability.
Includes a downpipe set designed specifically for the M177 hot-V platform.
🔊 Real Exhaust Sound
Sound reference recorded on a W213 E63 equipped with high-flow M177 downpipes.
⚙️ Performance Characteristics
- Significant power gains with ECU calibration (results vary by setup)
- Quicker turbo response and reduced exhaust restriction
- Lower exhaust backpressure supporting reduced EGTs
- OEM-style bolt-on fitment using factory mounting points
- Minimal drone with a deeper, composed tone under load
🔧 Compatible Vehicles
- 2017+ Mercedes-AMG E63 (W213)
- 2017+ Mercedes-AMG E63S (W213)
📊 Construction & Engineering
- Material: 304 stainless steel
- Welds: Back-purged TIG welding
- Flanges: CNC-machined for precise sealing
- Tubing: Mandrel-bent, OEM-compatible routing
- Connections: V-band where appropriate for repeatable alignment and leak-resistant sealing
Designed around the M177 hot-V turbo layout, with platform-specific bends and clearances to navigate tight engine bay packaging without compromising serviceability.
🧰 Installation Reference
Estimated install time: 4–6 hours with a lift. Professional installation recommended.
💎 Why BenzUnited Parts
- Mercedes-focused engineering: OEM+ and AMG performance specialists
- Platform-aware design: optimized for the M177 hot-V architecture
- Real-world validation: tested on street and performance builds
- Enthusiast support: speak with people who install what they sell
💬 FAQ
Will this trigger a CEL?
Yes, if run without tuning. ECU calibration or O₂ management is recommended.
Is tuning required?
Not required, but strongly recommended for best performance and drivability.
⚠️ Important Notice
For Off-Road Use Only: Not legal for public road use.
