Stone Exhaust Valved Cat-Back for Mercedes-Benz AMG GLE43/GLE450 (W166/C292, M276) - Active Valve OBD2 Remote, Switchable Flap Sports Catback, No-Drone, OPF Compatible GLE-Class Performance Upgrade

Valve‑Controlled Catback Upgrade for Mercedes‑AMG GLE 43 and GLE 450 | W166 SUV and C292 Coupe | M276 V6

Transform your AMG GLE with a premium switchable rear section from Stone Exhaust. This performance catback delivers a deep, refined tone for daily use and an aggressive soundtrack on demand, all while keeping motorway cruising calm and drone free. Designed from a complete 3D scan of the factory system for OE‑level fit and alignment, it is the go‑to exhaust upgrade for the V6 biturbo M276 platform.

We have installed this system on UK GLE 43 and GLE 450 models and the feedback has been outstanding. With valves shut the car remains civilised and comfortable. Open the valves and you get that purposeful Stone signature sound without the boom or resonance you do not want.

Key reasons to choose this Stone valve system

• Direct fit for AMG GLE 43 and GLE 450 on W166 and C292 chassis with the M276 engine
• Valve‑controlled sound: quiet for the commute, exciting for spirited driving
• Remote control with ON, OFF and AUTO modes to tailor valve position by rpm
• Plug and play OBD2 controller for quick setup and tidy integration
• Anti‑drone design for relaxed cabin comfort at speed
• Dyno‑developed flow and acoustic tuning by Stone Exhaust
• One‑piece construction with precision machine welding for strength and consistency
• Reverse engineered from the OE system for accurate hanger positions and perfect tip alignment

Acoustic control made easy

Use the supplied remote to choose your drive mode. ON opens the valves for maximum presence and tone, OFF keeps things subdued for neighbourhood and motorway use, and AUTO lets you set valve behaviour by engine speed. The control unit connects via the OBDII port for a clean, reversible installation.

Built for performance and longevity

• 7‑axis CNC mandrel bending for smooth internal radii and excellent gas flow
• Dimensional accuracy within 0.025 mm from advanced scanning and CAD development
• Criss‑cross and overlapping weld techniques at high‑stress areas to withstand 800 to 1100°C
• Robotic spot welding for consistent penetration and durable joints

OPF and GPF compatibility

Running a car with a petrol particulate filter. An OPF delete function is included at no extra cost to prevent fault codes when installing this exhaust. No ECU coding is required.

Vehicle fitment

• Mercedes‑AMG GLE 43 and GLE 450 W166 SUV: 2015 onward
• Mercedes‑AMG GLE 43 and GLE 450 C292 Coupe: 2016 onward
• Engine: M276 V6 biturbo

Professional fitting

For a seamless install and perfect alignment, book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Part number

MP516S

Warranty

Stone Exhaust 2 year warranty.

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