XYZ Racing Street Advanced Coilovers — BMW 4 SERIES G23 (2WD/4WD) 4/6CYL 2020-2026

The G23 4 Series Convertible carries more mass over its axles than the closed coupe, the roof motor, extra structural bracing and the folding mechanism all add weight that a stiffer chassis has to manage without turning ride quality into a chore. BMW offers this open-top body in 2WD and 4WD form across both 4-cylinder and 6-cylinder engines from 2020 onward, and the factory damping was tuned around comfort compromises this platform doesn’t need on a car built to drive hard.

The XYZ Racing Street Advanced coilover kit for the BMW 4 Series G23 answers that with adjustable damping suited to a car that spends most of its time on the road but still wants a spirited back-road run or an occasional track day. It lets the convertible’s added weight work with the suspension rather than against it, sharpening turn-in without punishing the cabin over broken tarmac.

What this coilover does for your 2020-2026 BMW 4 Series G23

Ride height and damping become yours to set rather than BMW’s factory compromise. With 720 damping adjustment positions you can wind in more support ahead of a track day and back it off for a longer motorway run, without swapping parts to do it, which matters on a convertible where body control has to fight extra unsprung mass and a shell that flexes more than the coupe’s. Dropping the centre of gravity tightens the G23’s roll behaviour through direction changes, useful given how much sheet metal and mechanism sits above the sills on this body style. On 4WD (xDrive) cars, tighter damping control helps the front axle stay planted under power, while 2WD versions get a more direct connection between throttle input and rear-end rotation. Both the 4-cylinder and 6-cylinder versions see the same reduction in body roll and dive under braking, which makes the car feel smaller and more accurate on a twisting road.

About the Street Advanced coilover

Street Advanced sits at the centre of XYZ Racing’s coilover range and is the kit the brand sells in the highest volume, refined over several seasons by XYZ’s in-house engineering team and shaped by feedback from race programmes run worldwide. That competition exposure fed back into a road-focused product: 720 individual damping settings give a far finer resolution than a basic 16- or 32-way adjuster, letting an owner move between a compliant daily setting and a firmer track-day state in small, repeatable steps rather than broad jumps. The kit is built for cars that split their time between normal road use and occasional circuit or track-day work, rather than being set up exclusively for one or the other. XYZ positions it as essential equipment for drivers chasing both outright pace and the control to use it safely, and the damping range reflects that dual brief, soft enough at the low end for everyday comfort, firm enough at the top end to hold a heavier convertible body flat under load.

Fitment for the BMW 4 Series G23 (2020-2026)

This kit is specified for the BMW 4 Series G23 in both 2WD and 4WD (xDrive) configurations, covering 4-cylinder and 6-cylinder engine variants built from 2020 to 2026. Chassis reference BM121 confirms the correct kit for the G23 open-top platform, as distinct from the G22 coupe and G26 Gran Coupe. Confirm your exact drivetrain and engine variant at checkout so the correct spring and damping spec is matched to your car.

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Select your drivetrain and engine variant below to build the correct Street Advanced coilover kit for your BMW 4 Series G23.