Stone Exhaust Cat-Back Valvetronic Exhaust - Mercedes-Benz AMG GLC43 M276 X253 C253 - Part No. MP517S
Upgrade your Mercedes-AMG GLC43 with the Stone Exhaust Cat-Back Valvetronic Exhaust System MP517S. Engineered specifically for the M276-powered GLC43 X253 and C253 models, this premium cat-back exhaust delivers the sound, performance and quality every AMG owner expects. Developed using 3D scanning and reverse engineering of the OEM system, it fits like factory and sounds like a true performance exhaust - all while eliminating the drone often found on standard systems.
Whether you search for Mercedes GLC43 exhaust, AMG GLC43 cat-back, GLC 43 valved exhaust, Mercedes-Benz GLC43 performance exhaust, X253 C253 catback, Stone Exhaust MP517S or valvetronic exhaust for Mercedes, this is the proven plug and play solution that transforms your car. We have fitted and used this Stone Exhaust on GLC43s at Nforcd and customer feedback has been consistently excellent - deeper tone, superb valve control, precise fitment and an addictive Stone signature sound.
Why choose Stone Exhaust for your GLC43
- Direct-fit Stone Exhaust Valvetronic cat-back for Mercedes-Benz AMG GLC43 M276 X253 and C253
- Valved exhaust with remote control - On, Off and Auto modes for instant sound control
- Plug and play OBDII controller - simple installation and fast setup
- One-piece design with precision mechanical welding for strength and durability
- Developed using 3D scanning and reverse engineering for 100 percent OEM-like fitment
- Dyno developed in-house for enhanced performance and throttle response
- Eliminates drone compared to the standard exhaust system
Search terms often used for this system: Mercedes GLC43 exhaust, AMG GLC43 exhaust, GLC 43 cat back, GLC43 catback, GLC43 valvetronic exhaust, Mercedes X253 exhaust, Mercedes C253 exhaust, Stone Exhaust GLC43, Stone MP517S, performance exhaust UK, valved exhaust Mercedes.
Valvetronic control - sound on your terms
The Stone Valvetronic system is researched and developed in-house to maximise reliability and longevity. The supplied remote gives you three modes - On, Off and Auto - so you can switch from refined to aggressive instantly. In Auto mode you can set the valves to open automatically at a chosen rpm for intelligent, hands-free control. The system connects via the OBDII port and is designed to be fast to install.
OPF compatibility and OPF delete
For OPF-equipped cars, Stone offers an OPF delete at no extra cost. This allows you to fit the Stone cat-back on OPF vehicles without triggering an error code, so ECU coding to remove OPF faults is not required.
Engineered for precision and performance
- 7-axis CNC bending - industry-leading accuracy and consistency
- Up to 98 percent roundness with minimal outer bore wear at 180 degrees
- Integrally moulded pipework with accuracy error under 0.025 mm to reduce flow disturbance
- Crisscross and overlapping welding technique for wider, deeper weld penetration at high-stress zones
- Direct spot welding by mechanical arms for superior strength and repeatability
From 3D simulation of exhaust gas flow, temperature and pressure, to real-world dyno validation, Stone Exhaust optimises route, diameter and bend geometry for the Mercedes-Benz AMG GLC43 M276 platform to deliver the Stone signature sound and improved performance.
Compatibility
Mercedes-Benz AMG GLC-Class with M276 engine:
- X253 AMG GLC43 - 2015 onwards
- C253 AMG GLC43 - 2015 onwards
Part number
MP517S
Fitting and installation
We recommend professional installation. Nforcd offers fitting at our Warwickshire workshop - request a quote at Sales@nforcd.com.
Stone Valvetronic System installation video:
Warranty
Stone Exhaust 2 year warranty.
Photos
R and D in pictures
In summary
If you are looking for a Mercedes-Benz AMG GLC43 exhaust upgrade - cat-back, catback, valved, Valvetronic, performance exhaust for X253 or C253 - the Stone Exhaust MP517S is the standout choice. It is plug and play, remote controlled, eliminates drone, fits like OEM and delivers the unmistakable Stone signature sound. Order your Stone Exhaust Mercedes GLC43 Valvetronic Cat-Back today or contact Nforcd in Warwickshire for a fitting quote.