XYZ Racing Circuit Master Coilovers — Mercedes-Benz C CLASS W205 6 CYL (Cancellation Kit for Electronic Damping) 2015-2021

The W205’s factory Airmatic or Agility Control set-up is built around electronic damping, which is exactly the problem for anyone converting a six-cylinder C-Class to a fixed coilover platform. Fit a proper mechanical coilover to a car that still thinks it has electronic dampers and the ECU throws faults or tries to intervene where it has no hardware left to control. This Circuit Master kit ships with the cancellation kit built in, so the six-cylinder W205 runs clean on fully manual, driver-set damping instead.

That matters because Circuit Master is XYZ Racing’s sustained-lap-time spec, not a fast-road compromise. For a 3.0-litre C-Class doing repeated circuit sessions, the priority is a chassis that holds its set-up through heat cycling and successive laps rather than one that’s optimised for a comfortable commute.

What this coilover does for your 2015-2021 Mercedes Benz C Class

With the electronic damping cancellation kit in place, the six-cylinder W205 loses the factory adaptive-damper error codes and dashboard warnings that plague incomplete coilover conversions, and the suspension responds purely to the manual adjustment you’ve set rather than an ECU second-guessing it. The 9720-way damping adjustment range across compression and rebound gives you the scope to firm up front-end support for the W205’s nose under trail-braking into slower corners, then back it off again for a bumpier circuit surface without swapping parts. Ride height is independently adjustable at each corner, so you can correct the C-Class’s rake and get weight distributed evenly across all four corners once the car is lowered – something the standard self-levelling suspension can’t do once it’s removed. Over a full track session, that manual control keeps the platform consistent from the first lap to the last, rather than drifting as the car settles or heats up.

About the Circuit Master coilover

Circuit Master sits at the top of XYZ Racing’s range as the design built specifically for circuit and competitive track use, developed and tested by XYZ’s own racing teams across international events. The damper offers 9720 distinct adjustment combinations, controlled through 3 external knobs, giving a genuinely wide window to tune compression and rebound independently rather than relying on a single master dial. Construction uses a small-oil-hole passage design in the damper – a deliberate trade-off that can produce a faint noise over sharp bumps or kerbs, which is a normal characteristic of this valving rather than a fault, and isn’t a concern on the smooth surfaces this kit is built for. The kit is aimed at drivers doing repeated laps on circuit tarmac rather than daily road use, where that fine-grained adjustability is actually usable. For the W205 platform specifically, the electronic damping cancellation kit is what makes fitting this level of adjustability possible at all without fighting the car’s own electronics.

Fitment for the Mercedes Benz C Class W205 (2015-2021)

This kit is specified for the Mercedes Benz C Class W205, six-cylinder variants, built between 2015 and 2021, and includes the electronic damping cancellation kit required for cars originally fitted with electronic dampers (chassis code ME07-5-C). Confirm your C-Class is the six-cylinder W205 rather than a four-cylinder variant before ordering, as the two use different kits.

What buyers also search for

• Mercedes Benz C Class W205 coilover conversion that removes electronic damping fault codes
• W205 six-cylinder Circuit Master damping set-up for repeated track sessions
• Mercedes C-Class coilover kit with independent ride height and 9720-way adjustment
• W205 electronic suspension cancellation kit for manual coilover fitment
• Mercedes Benz C Class track coilover with front-end support under trail-braking

Configure your Circuit Master spec for the W205 six-cylinder below to match adjustment range and ride height to your car.