XYZ Racing Tarmac Rally Coilovers — BMW 1 SERIES F40 3/4 CYL (Modified Rear Integrated) 2019-2026

The F40’s front-wheel-drive UKL platform loads its transverse-mounted three- or four-cylinder engine hard onto the nose under braking into a junction, and a rough stage surface will find every weakness in a stock damper before the first hairpin. XYZ Racing built the Tarmac Rally coilover specifically for that kind of surface abuse – broken tarmac, camber changes, mid-corner bumps – rather than smooth-circuit lapping.

Fitted to a 2019-2026 1 Series F40, this kit uses a modified rear shock mount that integrates with the car’s rear axle geometry rather than a bolt-on adapter, which matters on a chassis where the rear end already has to do more work compensating for a nose-heavy front. This is the coilover to run if the car is heading onto closed tarmac stages rather than a track day car park.

What this coilover does for your 2019-2026 Bmw 1 Series F40

On broken stage tarmac the F40’s torsion-beam or multi-link rear axle (depending on trim) needs to stay planted through compressions and off-camber sections without the body pitching enough to unsettle the driver’s next input. The damping in this kit is tuned to soak up the big hits – potholes, ridges, patched sections – without the harsh secondary shock that knocks a car off line mid-corner. That control translates directly into tyre contact: the more the damper absorbs the impact itself, the less the tyre has to skip over it, which keeps the contact patch loaded and the car pointing where you steered it. Because the F40 carries most of its mass over the front axle, the rear-specific mounting on this kit is there to stop the back end going light under trail-braking into a stage junction, which is where FWD-based hatches typically lose time to more balanced cars. The result is a chassis that stays composed corner after corner on a surface that changes grip level constantly, rather than one that’s been set up for a smooth, closed circuit.

About the Tarmac Rally coilover

XYZ Racing developed the Tarmac Rally line around one job: soaking up the impact of an uneven road surface without the body kicking back at the driver. The valving is set to absorb big single hits – kerbs, ridges, mid-corner bumps – and settle the car quickly afterwards rather than letting the impact travel through as a secondary jolt. That’s the difference between a stage car staying stable through a compression and one that gets thrown off line by it. Keeping the tyre in contact with the road through those hits is the whole point of the damping curve, since traction on tarmac stages is won and lost in the moments after a bump, not on the smooth sections either side of it. The settings built into this kit come from XYZ’s own tarmac rally programme rather than a generic road-and-track compromise, which is why the character leans towards controlled compliance over outright stiffness. On the F40 that means a car that can carry speed over a rough stage without the suspension fighting the driver for control of the line.

Fitment for the Bmw 1 Series F40 (2019-2026)

This kit is built for the F40-generation BMW 1 Series across 2019 to 2026, covering the 3-cylinder and 4-cylinder engine variants under chassis code BM109-1. It uses the modified rear mount specific to this platform’s rear axle integration, so it is not interchangeable with front-wheel-drive-only or xDrive-only F40 kits without confirming which rear configuration your car has.

What buyers also search for

• BMW 1 Series F40 rally coilovers for tarmac stage events
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• Tarmac rally coilover kit for 3-cylinder and 4-cylinder F40 models
• BMW 1 Series F40 rear-integrated coilover fitment

Configure the spec for your BM109-1 chassis below and build yours to match the stages you’re actually running.