XYZ Racing Circuit Master Coilovers — Mercedes-Benz C CLASS W204/S204 4 CYL (Cancellation Kit for Electronic Damping) 2007-2014

The W204/S204 C-Class’s factory electronic damping control unit is built to talk to Mercedes’ own dampers, not aftermarket ones – which is exactly why this Circuit Master kit ships with a cancellation kit bundled in, wiring out the factory control loop so the ECU stops hunting for sensors that are no longer there. For a 4-cylinder C-Class heading toward sustained circuit lap-time work, that’s the difference between a coilover install that just bolts on and one that actually behaves cleanly from the first session onward.

XYZ Racing’s Circuit Master is the brand’s circuit-focused platform, and on this chassis it replaces both the springs and the electronic-damping hardware in one swap. The W204/S204’s saloon and estate underpinnings are stiff enough to reward a proper coilover set-up, and removing the factory control unit takes a layer of software out of the loop between driver input and damper response.

What this coilover does for your 2007-2014 Mercedes Benz C CLASS W204/S204 4 CYL

With 9720 ways of damping adjustment split across 3 external knobs, you can set compression and rebound independently for a track-day base and still nudge it session to session as tyres and track temperature change. That range matters more on a 4-cylinder C-Class than it might sound – the factory chassis carries more weight over the nose than a smaller hatchback, and having that much adjustment lets you balance corner-entry rotation without giving up rear stability under power. Ride height is adjustable through the coilover body, so you can drop the C-Class enough to lower its centre of gravity for circuit work while still clearing the standard brakes. Because the electronic damping control is cancelled rather than left half-connected, there’s no dash warning light or ECU intervention fighting the manual set-up you’ve chosen.

About the Circuit Master coilover

Circuit Master sits at the top of XYZ Racing’s range and is built specifically around circuit driving rather than road comfort. XYZ’s own racing teams have run the platform across international circuits during its development, which is where the 9720-way adjustment figure comes from – three external knobs give independent control over compression and rebound rather than a single combined dial. The trade-off of that fine an adjustment range is a small-oil-hole internal design; on rough sections of a real road you may hear a faint noise through the damper as oil passes through the narrower passage, which is a normal characteristic of the design rather than a fault. It’s a set-up that assumes a smooth circuit surface rather than potholes and speed bumps, and on track that oil-hole design causes no noise or drivability concern at all. On the W204/S204 platform, this specific application bundles the coilover kit with a cancellation kit for the car’s electronic damping control, so the swap replaces the factory system outright instead of trying to run alongside it.

Fitment for the Mercedes Benz C CLASS W204/S204 4 CYL (Cancellation Kit for Electronic Damping) (2007-2014)

This kit is built for the Mercedes Benz C CLASS W204/S204 4-cylinder, chassis code ME05-C, covering the 2007 to 2014 production run – both saloon and estate bodies fall under the W204/S204 designation. Because this specific fitment includes the electronic damping cancellation kit, confirm your C-Class was originally ordered with factory electronic damping control before ordering; standard-damper 4-cylinder cars use the non-cancellation version of the same Circuit Master kit.

What buyers also search for

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• W204 S204 saloon and estate suspension set-up for circuit driving

Circuit Master with the electronic-damping cancellation kit is the correct spec for a factory-equipped W204/S204 – pick your ride height and configure yours below.