XYZ Racing Tarmac Rally Coilovers — BMW 4 SERIES F83 M4 (Modified Rear Integrated) 2014-2020

The F83 M4’s twin-turbo S55 sends close to 425bhp through the rear axle alone, and on a rough tarmac stage that load lands through a chassis that already carries convertible-spec bracing and extra kerb weight over the coupe. Stock geometry copes fine on a smooth B-road; it does not hold together on a compression-riddled stage road run at rally pace, where the rear end is the first thing to step out of line.

XYZ Racing’s Tarmac Rally coilover is built around exactly that scenario – sealed-stage events on uneven, sometimes broken tarmac, rather than closed-circuit lapping. On this F83 M4 fitment (Modified Rr Integrated), the rear geometry has been reworked into the kit itself, so the damper mounts directly into the car’s rear suspension instead of working around a compromised standard mounting point.

What this coilover does for your 2014-2020 Bmw 4 Series F83 M4 (Modified Rr Integrated)

Across a stage, the bigger threat to your time isn’t outright grip, it’s what happens when the F83’s rear axle unloads over a crest or lands hard out of a compression – a standard damper spikes and the tyre skips instead of biting. The Tarmac Rally valving is set up to absorb that kind of hit directly, controlling body movement through the impact rather than passing it straight into the chassis, so the rear tyre stays loaded and the S55’s torque goes into forward drive rather than wheelspin. On a car that’s already inclined to snap loose mid-corner when it’s unsettled, that extra composure over broken surfaces changes how hard you can commit into the next braking zone.

About the Tarmac Rally coilover

The Tarmac Rally sits in XYZ Racing’s range as the damper built around one specific job: soaking up the repeated, unpredictable hits of a rough stage road without losing the car underneath the driver. Where a circuit-focused coilover is valved around consistent, smooth-surface loads, this construction is set up for potholes, ridges and mid-corner camber changes, absorbing that impact rather than letting it kick the body off line. The tune is aimed at suppressing the resulting shock through the body instead of transmitting it straight to the chassis, which keeps the contact patch working the surface rather than skipping across it. XYZ carries that approach over directly from its own tarmac rally programme, so the settings on this kit reflect actual stage running rather than a track damper repurposed for rough roads.

Fitment for the Bmw 4 Series F83 M4 (Modified Rr Integrated) (2014-2020)

This kit is built for the Bmw 4 Series F83 M4 (Modified Rr Integrated), chassis code BM95, covering the 2014 to 2020 build range. The rear mounting is adapted specifically for this chassis’s integrated rear suspension, so no further rear-axle modification is needed to run the kit on a BM95 built within that window.

What buyers also search for

• Bmw 4 Series F83 M4 suspension built for rough tarmac stage roads, not smooth circuit surfaces.
• Bmw 4 Series F83 M4 tarmac rally coilover with rear-integrated mounting for the BM95 chassis.
• Bmw F83 M4 damper tuned to hold traction over stage-road hits, crests and compressions.
• Bmw 4 Series M4 coilover set up for sealed-stage tarmac rally rather than closed-circuit track use.

If you’re setting this F83 M4 up for stage work rather than the circuit, this is the spec built for that job – configure yours below.