GRAIL Valved Exhaust System | ECE | suitable for Mercedes-Benz CLS 500 4.7L 218 (model year 2011-2017)

GRAIL Valved Exhaust System
suitable for Mercedes-Benz CLS 500 4.7L 218 (Bj.2011-2017)

suitable for Mercedes CLS 500 4.7L 218 (2011-2017) The GRAIL Valve Exhaust System for the Mercedes CLS 500 with M 278 engine and 300 kW system output was developed precisely for the C218 and X218 model series – for both pre-facelift and facelift vehicles. Crafted from 304L stainless steel, the system seamlessly adopts the stock Tips and integrates perfectly into the vehicle's look, both visually and technically. The active Valve Control lets you unleash the character of the 4.7-litre V8 at any time, exactly as you want it – from refined, understated cruising to a full-bodied sound under load. Available from August 2026, with or without installation directly at GRAIL.

Highlights

• V8 sound signature on demand: The active Valve Control unleashes the distinctive character of the M 278 exactly when you want it – from cultivated restraint to a rich V8 roar under full load.
• A cohesive rear-end look: By seamlessly adopting the stock Tips, the elegant rear styling of the CLS is fully preserved – no compromise between sportiness and style.
• Valve Control for every driving mode: Whether you're relaxed cruising or driving dynamically – the Valve regulates exhaust flow to suit the moment, making the sound a fully controllable experience.
• Tailored precision fit: Every component is specifically matched to the geometry of the CLS 500 (C218/X218), ensuring installation is precise and requires no modifications to the vehicle.
• ECE type approval: No registration required* in all participating ECE countries.
• German Engineering: Developed by German engineers for maximum quality.
• Material 304L stainless steel: Corrosion-resistant, dimensionally stable, with a flawless surface finish.
• Flow-optimized: Efficient exhaust pipe routing and heat dissipation.
• Drone-free comfort: Absorption technology eliminates unwanted frequencies inside the cabin.
• OEM fit: Designed to mount at the original mounting points.

TÜV / ABE available upon request

We currently ship within Europe only.

If a part is not available, we will contact you with an estimated wait time.

If you wish to return a product after receiving it, we offer a 14-day returns policy. Custom-made products are not eligible for return, and return shipping is at the customer's expense. Full delivery and returns terms are on the “Delivery Information” page — the link is at the bottom of the page.

Products come with a warranty, detailed in a certificate included in the box.

To make a valid claim, you must prove the damage was not caused by you and that the warranty certificate is valid.

Full terms are on the “Terms & Conditions” page — the link is at the bottom of the page.