XYZ Racing Circuit Master Coilovers — BMW 4 SERIES G82 M4 (Modified Rear Integrated) (Cancellation Kit for Electronic Damping) 2021-2026

The G82 M4’s adaptive M Suspension leans on an electronic damper control loop to keep the S58’s power and the car’s rear-biased weight down through fast direction changes, and that loop has to be switched off before a mechanical coilover can do the job properly. The XYZ Racing Circuit Master coilover for the BMW 4 Series G82 M4 is supplied here with the cancellation kit for electronic damping, which disables the factory EDC signalling so the car doesn’t throw fault codes once the OE dampers are gone.

Circuit Master is XYZ’s sustained lap-time platform, built for cars that are going to spend real time on circuit rather than the occasional trackday. On a chassis with the G82’s twin-turbo six up front and a wide, multi-link rear axle, that means damping and spring rates set up to control weight transfer session after session rather than degrade after a handful of hot laps.

What this coilover does for your 2021-2026 BMW 4 Series G82 M4

Fitted with the cancellation kit, the Circuit Master takes over full control of ride height and damping from a chassis that otherwise defaults everything to its electronic dampers, so front and rear settings stop being dictated by a drive-mode menu and start being dictated by the driver. The 9,720 available damping combinations give enough range to firm the car up for a fast, technical circuit and back it off again for a bumpier one without touching springs. On the G82’s rear-biased mass, that adjustability matters most under trail-braking and mid-corner load transfer, where the multi-link rear geometry (the "Modified Rr Integrated" fitment covers the reworked rear integrated-arm mounting this coilover uses) needs consistent support rather than a system hunting for the right setting lap to lap. Ride height is independently adjustable too, so corner weights and stance can be dialled to the car rather than left at whatever the factory M Suspension defaults to.

About the Circuit Master coilover

Circuit Master sits at the top of XYZ Racing’s damper range, built as the everyday tool for teams and drivers racing across multiple international circuits rather than a one-off track special. Each damper uses three external adjustment knobs feeding a small-orifice oil circuit, which is what delivers the 9,720-way adjustment range rather than a single compression/rebound dial. Because the oil passage is deliberately small, expect some minor noise over sharp bumps or kerbs – that’s the valving doing its job, not a fault, and it’s a known characteristic of this build rather than something to chase with a warranty claim. Construction is aimed squarely at circuit use: the unit is set up to hold its settings under repeated heat cycling rather than fade after a few sessions, which is the point of a coilover pitched at drivers who are actually racing, not just fitting lower springs. For the G82 M4 specifically, that comes packaged with the electronic damping cancellation kit needed to run the coilover without the factory EDC module interfering.

Fitment for the BMW 4 Series G82 M4 (2021-2026)

This kit is built for the BMW 4 Series G82 M4, chassis code BM118-1-C, covering the 2021-2026 production run. It’s the "Modified Rr Integrated" variant, matched to this generation’s rear integrated-arm mounting, and includes the cancellation kit required to disable the car’s electronic damper control so the mechanical coilover runs without conflicting with the factory system.

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Spec your G82 M4’s Circuit Master setup below, including the electronic damping cancellation kit, and build yours to your car.