Mercedes-Benz W205 C63 Catless Downpipes — M177 4.0L Twin-Turbo V8
YPG Motorsport catless downpipes for the Mercedes-AMG C63 and C63 S (W205) replace the restrictive factory catalytic converters with full 3.5-inch mandrel-bent stainless steel pipes. Reduced backpressure means faster turbo spool, sharper throttle response, and a significantly more aggressive V8 exhaust note — the deep growl and crackle that the M177 was always capable of producing.
Downpipes are the most effective single bolt-on for the C63 platform. Combined with a Stage 2 ECU calibration, expect 650–700 HP and 700–750 lb-ft of torque. This is the exact platform and modification path that YPG Motorsport used to set the world record for the first sub-10-second W205 C63 quarter mile at Kuwait Motor Town — the GCC's only FIA Grade 2 circuit.
Compatibility
- 2015–2021 Mercedes-AMG C63 (W205 Sedan)
- 2015–2021 Mercedes-AMG C63 S (W205 Sedan)
- 2015–2021 Mercedes-AMG C63 / C63 S (C205 Coupe)
- 2015–2021 Mercedes-AMG C63 / C63 S (A205 Cabriolet)
- 2015–2021 Mercedes-AMG C63 / C63 S (S205 Estate)
- Pre-facelift and Facelift models
- M177 4.0L Twin-Turbo V8 — all variants (469 HP / 503 HP S model)
Key Specifications
- Diameter: 3.5 inches — full mandrel bent
- Material: Low-carbon 304 stainless steel
- Construction: TIG welded, hand finished
- Flanges: CNC-machined 304 stainless — laser-cut OEM mounting points
- Fitment: Direct OEM replacement — bolt-on, no fabrication required
- Origin: Made in Germany
- Warranty: Lifetime
What's Included
- 1× pair stainless steel catless downpipes
- All necessary bolts, gaskets, and clamps
- OEM-style mount points for factory exhaust retention
Installation
Professional installation recommended. Requires vehicle lift access. Installation time is approximately 2–3 hours. A Stage 2 ECU calibration is required to eliminate the CEL caused by rear O2 sensor deletion and to unlock the full power gains. YPG Motorsport offers remote ECU flashing worldwide — OBD2 tool shipped to your door, guided session, 30–45 minutes, fully reversible to stock.
Why YPG Motorsport
YPG Motorsport has been building and tuning AMG engines since 2011. Our W205 C63 world record build — the first M177-powered C63 to break into the 9-second quarter mile — used these exact downpipes as part of the exhaust platform. Every part we sell is a part we've proven at the track. Ships worldwide with free delivery. GCC stock available for same-week dispatch to Kuwait, Saudi Arabia, UAE, Qatar, Bahrain, and Oman.