Stone Exhaust Mercedes-Benz AMG M276 W213 S213 Cat-Back Valvetronic Exhaust System for E400, E450 and E43
Upgrade your Mercedes-Benz E-Class with the Stone Exhaust Valvetronic Cat-Back Exhaust System. Engineered specifically for the Mercedes-Benz W213 and S213 E400, E450 and E43 models with the M276 engine, this premium valved cat-back transforms sound, sharpens response and elevates every drive. If you are searching for a Mercedes E43 AMG exhaust, Mercedes E400 exhaust, Mercedes E450 exhaust, W213 exhaust, S213 exhaust, AMG M276 valvetronic exhaust or a performance cat back for E-Class, this is the system to buy.
Developed by Stone Exhaust since 1998 using 3D scanning and reverse engineering of the OEM system, this cat-back delivers 100 percent OEM-level fitment with precision construction and an authentic performance tone. Dyno-developed in-house and designed to eliminate drone found on the standard exhaust, it offers daily-drive comfort with aggressive sound on demand.
Why choose this Stone Valvetronic Cat-Back for your E-Class
- Direct-fit Mercedes-Benz W213 S213 E-Class M276 cat-back exhaust for E400, E450 and E43 AMG
- Valvetronic system with remote control: ON, OFF and AUTO modes
- Plug and play OBDII controller connects in minutes for quick installation and simple valve control
- One-piece design with precision mechanical welding for strength and durability
- Engineered via 3D scanning and reverse engineering for exact OEM fitment
- In-house R&D and dyno development for proven performance and the Stone signature sound
- Eliminates drone compared to the standard factory exhaust system
Valvetronic control and everyday usability
The Stone Valvetronic remote gives instant control of your exhaust tone. Open the valves for a deep, motorsport-inspired note, close them for discreet cruising or use AUTO mode to open and close at a preset RPM automatically. It is simple, reliable and designed for longevity without complicated wiring.
OPF GPF compatibility
Running an OPF GPF car We can include an OPF delete solution free of charge to allow installation without triggering an error code. No ECU coding required. Ask our team when ordering.
Engineered for precision, sound and reliability
- 7-axis CNC bending achieves industry-leading roundness and accuracy to optimise flow and fit
- Crisscross and overlapping welding techniques improve strength at high-stress, high-temperature zones
- Direct spot welding by mechanical arms for consistent penetration and quality
From reverse-engineered pipe routing to bending angles and diameters, Stone Exhaust optimises gas flow, thermal distribution and pressure zones using 3D simulation to achieve the ideal balance of sound and performance.
Real-world results customers love
We have supplied and fitted these systems and customer feedback has been consistently excellent. Owners praise the perfect fit, premium build quality, zero-drone cruising and the addictive Valvetronic sound when the valves are open. It is the ideal Mercedes E-Class cat back exhaust upgrade for enthusiasts who want refinement and excitement in one package.
Compatibility
Mercedes-Benz E-Class with M276 engine:
- W213 E400 2016–2018
- W213 E450 2019+
- W213 E43 AMG 2016–2018
- S213 E400 2016–2018
- S213 E450 2019+
- S213 E43 AMG 2016–2018
Options and part numbers
- MP530AS Left and right pipe separated
- MP530BS Single side two-pipes
Warranty
Stone Exhaust 2-year warranty.
Professional fitting
Want it fitted by experts Book installation with Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Watch and listen
See the Valvetronic system in action and hear real-world sound clips below.
Gallery
Technical development
Stone Exhaust engineers use OEM 3D scans to analyse pipe diameter, routing and bend angles, then simulate exhaust gas flow, thermal behaviour and pressure zones. Progressive improvements are applied until optimal performance and sound are achieved.
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