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

The G23 carries the weight of a folding hard-top and reinforced sill structure that the closed-roof 4 Series coupe doesn’t, and that extra mass sits low across a platform built to run both 2WD and 4WD, four- and six-cylinder drivetrains. Sealed-stage tarmac rally roads aren’t circuit-smooth: camber changes mid-corner, patched surfaces drop away without warning, and a car has to stay planted through compressions that a track kerb would never throw at it.

XYZ Racing’s Tarmac Rally coilover is built around that reality rather than lap-time optimisation. It’s tuned to keep the G23’s chassis composed when the road surface itself is the variable, not just the corner.

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

On a car carrying convertible-spec bracing and the added unsprung mass of xDrive on 4WD variants, damping that can absorb a hard hit without unsettling the rear axle matters more than outright stiffness. This kit is calibrated to soak up the jolt from broken tarmac and mid-corner ruts without kicking the body off-line, which keeps the rear tyres loaded and gripping through the transition rather than skipping. That translates directly into confidence over stage sections you haven’t pre-driven, where the surface changes faster than you can react to it. Ride height adjustment lets you set the G23’s stance to match the amount of vertical travel a given stage demands, and the damper response is set up to control body movement through compressions rather than simply resisting it. For the six-cylinder cars in particular, where there’s more weight to manage under braking into a blind crest, that control is the difference between a car that tracks straight and one that steps sideways.

About the Tarmac Rally coilover

This is a damper built specifically around the demands of tarmac rally rather than adapted from a circuit-day spec. The valving is set to absorb impacts from uneven and patched road surfaces without transmitting the full shock through the chassis, which is what keeps the tyre in contact with the road instead of skipping across a bump. That shock absorption is tuned to work with the car’s stability under load, so the G23 holds its line through a rutted apex rather than getting deflected by it. The settings XYZ Racing ships on this kit come directly from their own tarmac rally programme rather than a generic damping curve, reflecting what actually happens to a chassis running flat-out on public-road surfaces stage after stage. It’s built as a full coilover assembly, giving you both the ride height and damping control needed to set the car up for a specific stage rather than a fixed factory compromise.

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

This kit is built for the BMW 4 Series G23 (chassis code BM121), covering both 2WD and 4WD drivetrains across the four- and six-cylinder engine range for the 2020-2026 model years. Confirm your exact engine and drivetrain variant against the fitment data before ordering, since the G23’s spring and damper rates are matched to the specific drivetrain layout.

What buyers also search for

• BMW 4 Series G23 suspension setup for tarmac rally and fast road use
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• XYZ Racing Tarmac Rally kit for four- and six-cylinder G23 models

Spec your BM121’s exact drivetrain and engine variant and configure yours below.