XYZ Racing Circuit Master Coilovers — BMW 3 SERIES G20 (2WD/4WD) 4/6 CYL (Modified Rear Integrated) (Cancellation Kit for Electronic Damping 2018-2026

The G20 3 Series arrived with adaptive dampers as standard on most UK-spec cars, which is exactly the problem the moment you want a fixed, mechanically-adjustable coilover instead. This Circuit Master kit comes with the cancellation kit built in, so the factory electronic damping control is deleted cleanly rather than left throwing fault codes at you from the iDrive cluster. Whether your G20 is running 4-cylinder or 6-cylinder power, 2WD or xDrive, the rear end’s modified, integrated design is matched to the way this chassis actually loads its rear axle under trail-braking and corner exit.

For sustained circuit lap-time work, that matters more than on a car doing the odd trackday. Repeated hot laps expose any looseness in a suspension setup fast, and a 3 Series pushed hard through direction changes needs damping and spring rate that don’t fall apart on lap eight the way lap one did.

What this coilover does for your 2018-2026 Bmw 3 Series

With 9720 combinations available across the 3 external adjustment knobs, you can set compression and rebound independently front and rear, then retune between a bumpy UK circuit and a smoother one without swapping parts. On the 4/6-cylinder G20 with the rear-integrated mounting, that adjustability lets you manage the nose-heavy feel under trail braking without inducing snap oversteer on corner exit, particularly relevant on the xDrive cars carrying extra weight over the front axle. The monotube-style damper construction resists fade better than the stock adaptive units once you’re running consecutive sessions, and because the electronic damping is properly cancelled rather than just unplugged, there’s no conflict between the car’s chassis control systems and the mechanical damper doing the actual work. Ride height and corner balance become something you set once per track, not something the factory computer decides for you.

About the Circuit Master coilover

Circuit Master sits at the top of XYZ Racing’s range, built for competitive circuit use rather than fast-road compromise – the kind of spec you’d associate with Racing Spec or Tarmac Rally builds rather than a daily-driven coilover. It’s been run and validated by XYZ’s own racing teams across international circuits, and the 3-knob, 9720-way adjustment range exists specifically so a team or serious owner can find a setting that works rather than settling for "close enough." The small-bore oil passage design in the knobs is a deliberate trade-off: it can produce a faint noise over larger bumps because oil is metered through a narrower channel, but that’s the mechanism doing its job, not a fault, and it’s irrelevant on a circuit surface where sustained control matters more than a smooth ride over potholes. This is a damper built to be adjusted often and to hold its settings under repeated heavy loading, not one designed to be set once and forgotten.

Fitment for the Bmw 3 Series (2018-2026)

This kit is built for the G20-generation 3 Series (chassis code BM107-C), covering both 2WD and xDrive 4/6-cylinder variants from 2018 to 2026. It’s specified for the modified, rear-integrated mounting configuration with the electronic damping cancellation kit included, so cars fitted with factory adaptive dampers are directly covered without separate wiring workarounds.

What buyers also search for

• Bmw 3 Series G20 coilover upgrade with adaptive damper cancellation kit
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Spec your G20 by drivetrain and knob configuration below, and build yours to match the circuit you actually drive.