XYZ Racing Circuit Master Coilovers — Mercedes-Benz C CLASS W204 6 CYL (Modified Rear Integrated) (Cancellation Kit for Electronic Damping) 2007-2014

The W204 C-Class’s factory electronic damping module does not take kindly to an aftermarket damper overriding its signal, which is why this fitment bundles a cancellation kit for electronic damping alongside the coilover itself – the car stops hunting for a sensor reading that no longer exists. On the 6-cylinder W204, the extra nose weight of the six-pot engine over the front axle shows up hardest under trail braking into slower corners, and it’s the front-end control this kit is built to address.

This is the Circuit Master, XYZ Racing’s platform for sustained circuit lap-time work rather than a single quick blast – the difference matters on a chassis whose factory multi-link rear was tuned for a comfortable saloon ride, not for holding line through a ten-lap session. Fitted with the modified rear integrated mounting for this generation, it’s built to keep the W204 composed corner after corner rather than degrading as the session goes on.

What this coilover kit does for your 2007-2014 Mercedes Benz C Class W204

With 9,720 possible damping combinations across the kit’s three external adjustment knobs, you can set compression and rebound independently to match a given circuit surface rather than living with one compromise setting. That range matters on the W204 because the standard multi-link rear geometry moves around under load in a way the factory damper was never valved to control at circuit pace. Front-end grip under trail braking firms up thanks to the reduction in nose dive that a fixed, height-adjustable coilover platform gives you over the softer factory setup. Because the electronic damping signal is cancelled rather than fought, there’s no dash warning or limp-mode intervention mid-session to interrupt what the suspension is doing.

About the Circuit Master coilover

The Circuit Master sits at the circuit-focused end of XYZ Racing’s range, alongside their Racing Spec, Drift Spec and Tarmac Rally builds, and it’s the one they’ve had their own racing teams run and validate internationally rather than just bench-tested. The headline figure is 9,720 damping combinations from three adjustment knobs, which is a wide enough spread to move from a stiff qualifying setup to something more forgiving for a long stint without swapping components. The knobs work through a deliberately small oil-hole design, and on rough sections of a circuit that can produce a faint noise from the damper as oil moves through the narrow passage – that’s a normal characteristic of this valving, not a fault, and it’s specifically what the design accepts in exchange for the fine adjustment range. It’s a kit built around repeat track sessions rather than road comfort, which is worth knowing before ordering if most of your driving is still on the public road.

Fitment for the Mercedes Benz C Class W204 (2007-2014)

Built for the Mercedes Benz C Class W204, 6-cylinder engines, across the 2007-2014 production run, with the modified rear integrated mounting specific to this chassis variant. Because the W204’s factory electronic damping control is active on relevant trims, this fitment is supplied with the cancellation kit needed to disable that signal so the Circuit Master’s fixed valving runs without interference. Confirm your car uses the 6-cylinder engine and the standard W204 rear mounting before ordering.

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Spec the Circuit Master to your W204’s setup and configure yours below.