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

The G23 convertible carries extra weight and less structural rigidity than its G22 coupe sibling, a consequence of the folding soft-top mechanism and the extra chassis bracing needed to compensate for a roof that isn’t permanently there. XYZ Racing’s Racing Spec coilover is built for owners pushing this chassis into serious track and time-attack sessions, where that shortfall in torsional stiffness shows up first as vagueness through fast direction changes.

Every valving and spring-rate decision in this kit comes from data pulled off WTCC-spec dampers, tuned to load the tyre correctly even when the platform underneath is flexing more than a closed-roof car. It covers the full 420i through M440i range, in both rear-drive and xDrive form, where the G23’s extra kerb weight needs controlling without turning the drive to the circuit into a chore.

What this coilover does for your 2020-2026 Bmw 4 Series G23 (2wd/4wd) 4/6cyl

Track sessions expose the G23’s extra convertible mass fastest under trail-braking into slow corners, where the front axle needs firm, predictable support without kicking the rear loose over compressions. Fitting this coilover drops the ride height and firms up spring rates far enough that body roll stops robbing you of front tyre contact patch through direction changes, whether you’re running the 420i’s four-cylinder or the M440i’s straight-six up front. xDrive cars get the same benefit through the rear, where the extra driveline hardware adds unsprung weight the standard suspension was never tuned to control at circuit pace. Because the kit is height-adjustable, you can also correct the stance and geometry the factory setup can’t touch once the car is lowered, keeping camber and roll centre in a range that works once the tyres are up to temperature.

About the Racing Spec coilover

The Racing Spec sits at the top of XYZ Racing’s coilover range, and its calibration isn’t guesswork – the valving and spring settings trace back to real circuit programmes, including XYZ’s direct involvement in WTCC competition. That means the baseline tune already reflects what a touring car damper has to do under repeated hard laps, not just a single fast one. For cars pushed further than a stock-bodied track machine – think factory-built racing cars or heavily upgraded club-racing builds – XYZ also offers a bespoke damper build. Buyers in that position can supply details of the other upgrades on the car and the circuit it will run, and XYZ will spec a shock absorber around that specific combination rather than a shelf part. On a G23, that route matters once you’ve gone beyond bushings and anti-roll bars into wider tyres, bigger brakes, or aero – it means the damper gets matched to the rest of the build instead of being the compromise in the package.

Fitment for the Bmw 4 Series G23 (2wd/4wd) 4/6cyl (2020-2026)

This kit is specced for the G23-generation 4 Series Convertible built between 2020 and 2026, covering both rear-wheel-drive and xDrive four-wheel-drive variants across the four-cylinder and six-cylinder line-up. Confirm your chassis code as BM121 before ordering, since the G23 shares showroom space with the G22 coupe and G26 Gran Coupe but runs different suspension hardware underneath.

What buyers also search for

• BMW 4 Series G23 convertible coilover upgrade for road and track use.
• BMW G23 xDrive Racing Spec damping built to hold up over repeated track sessions.
• BMW 420i, 430i and M440i G23 height-adjustable coilover kit options.
• BMW 4 Series G23 track suspension for time-attack and club racing entries.

Every G23 drivetrain and year in this range needs its own spring and valving spec, so pick your exact 420i, 430i or M440i variant and configure yours below.