Stone Exhaust Mercedes-Benz AMG M177 W205 C205 S205 A205 C63S Cat-Back Valvetronic Exhaust System
Buy the Stone Exhaust Mercedes-Benz C63S AMG cat-back Valvetronic exhaust system for the M177 engine here at Nforcd. This C63S cat-back exhaust is engineered for OEM-level fitment, big performance potential and an addictive AMG sound with valve control. If you are searching for Mercedes C63S exhaust, C63 AMG cat back, M177 Valvetronic exhaust, W205 C63S performance exhaust or valve controlled catback for Mercedes-Benz, this Stone Exhaust system delivers. We have fitted and used this system on customer cars and feedback has been outstanding for sound quality, drivability and finish.
Stone Exhaust has developed world-class exhaust systems since 1998. Each Mercedes-Benz AMG M177 cat-back is reverse engineered via 3D scanning of the OEM exhaust for a precise 100% OEM fit. The result is a direct-fit C63S AMG cat-back that enhances flow and acoustics while eliminating the drone found on the standard exhaust. Dyno-developed in house by Stone, this Valvetronic C63S exhaust is built to perform and built to last.
Why choose this C63S AMG cat-back exhaust
- Mercedes-Benz AMG M177 C63S cat-back exhaust with Valvetronic valve control
- Plug and play OBDII controller with separate remote control for ON, OFF and AUTO modes
- Eliminates drone vs the stock C63S exhaust for refined motorway cruising
- One piece design for optimal flow and easy installation
- 3D scanned and reverse engineered for factory-level fitment on W205, C205, S205, A205 C63S AMG
- Machine welding with advanced crisscross and overlapping welding techniques for durability
- 7 axis CNC bending for precision pipe geometry and smooth gas flow
- Developed and verified on Stone’s in-house dyno for proven performance gains and signature tone
Valvetronic control for your Mercedes C63S AMG
The Stone Valvetronic system gives you full control of your C63S exhaust. Open or close the valves with a click for quiet or aggressive sound, or use AUTO mode to open the valves at a set RPM automatically. The system is plug and play, connecting to the OBDII port for quick installation and integrated control. This is the ideal C63S Valvetronic exhaust for daily driving, spirited road use and track days.
OPF delete solution available
Stone offers an OPF delete that can be included free of charge. This allows OPF-equipped C63S models to run the Stone cat-back without triggering an error code, so coding out the OPF is not required.
Engineering highlights
- 3D Scanning and Reverse Engineering of the OEM C63S exhaust for exact fit and optimised routing
- 7 Axis CNC Bending achieves approximately 98% roundness with only 25% outer bore wear at 180 degrees
- Direct spot welding by mechanical welding arms for strength and precision
- Crisscross and overlapping welding increases weld penetration and endurance at high temperature zones
- Integrally moulded exhaust pipe accuracy with an error under 0.025 mm
Real-world results from Nforcd
We have installed this Stone Exhaust Mercedes C63S cat-back for customers and the results speak for themselves. Fitment is spot on, the tone is deep and aggressive with valves open, refined with valves closed, and the system eliminates the drone that many owners dislike on the standard exhaust. Our customers consistently praise the quality, finish and the transform-your-AMG sound.
Compatibility
Engine: Mercedes-Benz AMG M177
Chassis: W205 C-Class, S205 Estate, C205 Coupe, A205 Cabriolet
Transmissions: 7G and 9G
- W205 C63S AMG 2014+
- S205 C63S AMG 2014+
- C205 C63S AMG 2014+
- A205 C63S AMG 2014+
Often purchased with
Pair with the Stone Exhaust Mercedes-Benz AMG W205 C205 S205 C63S Eddy Catalytic Downpipe for maximum performance and sound.
Fitting and installation
The Stone Valvetronic system is plug and play via the OBDII port and can be installed within minutes, with full valve control through the included remote. For professional fitting, choose Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Part number
MP514S
Warranty
Stone Exhaust 2 Year Warranty
R&D images
Installation video
Sound demo
Search-friendly keywords
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