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

The G82 M4 leaves the factory with adaptive dampers that are clever on a B-road and frustrating on a circuit – the electronic map flattens the chassis but it also smooths over the feedback you actually want when you’re committing to a 130mph entry. The Circuit Master coilover for the G82 M4 replaces that closed-loop system entirely, with a cancellation kit included so the dash stops asking questions and the chassis does what your hands tell it to.

This is the spec XYZ developed alongside its international circuit programmes – Racing Spec, Drift Spec, Tarmac Rally – and brought back to the road-registered S58 platform. For a 510bhp twin-turbo straight-six wearing 285-section rears, the Circuit Master is the kit that lets the G82 finally hold a sustained pace at Donington or the Nordschleife without the OEM damping fighting you mid-corner.

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

With the electronic damping out of the loop, you get a chassis that finally responds linearly to driver input rather than to a sensor map. 9720 distinct adjustment combinations across compression and rebound mean the M4 can be set softer for a Cadwell shake-down lap and progressively wound up over a track day as tyre temperatures build. The three-knob layout (high-speed compression, low-speed compression, rebound) is the part of the design that earns its keep: you can tune the chassis to ride mid-corner kerbs without unsettling braking stability. Front-end bite improves, the rear axle stops squatting under boost on corner exit, and the body control under heavy braking from 150mph turns the S58’s pace into useable lap time instead of nervous understeer. Ride height adjustment lets you set front rake to suit the G82’s aero balance once you’re running splitter and rear wing.

About the Circuit Master coilover

The Circuit Master sits at the top of XYZ’s competition tree, sharing its damper architecture with the Racing Spec, Drift Spec, and Tarmac Rally variants that the company campaigns internationally. The 9720-way matrix is governed by three independent adjusters; the small-passage oil design is deliberate, optimised for the smooth, predictable load cycles of circuit tarmac rather than rutted public roads. Expect some audible response when the damper meets a sharp impact – a characteristic of the precision oil path – which is normal and explicitly part of the circuit-focused calibration. Tested by XYZ racing teams across multiple international championships, the platform has been refined over years of in-season data rather than bench-built to a spec sheet. The cancellation kit removes the OEM electronic damping control unit’s error logic, so the dashboard remains clean and the car remains MOT-tidy.

Fitment for the Bmw 4 Series (2021-2026)

This kit is built specifically for the G82 M4 chassis (XYZ reference BM118-C) covering the 2021 through 2026 model years. The included cancellation kit is required because this fitment replaces the factory adaptive damping system – confirm your car has the electronic damper option before ordering, as non-adaptive G82s use a different reference.

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Pick your spring rates and ride-height preference below to configure your Circuit Master spec for the G82 M4.