XYZ Racing Tarmac Rally Coilovers — Alfa Romeo 155 Q4 TURBO 4WD Rear: Non-ride height adjustable 1992-1997

The XYZ Racing Tarmac Rally coilover for the Alfa Romeo 155 Q4 addresses a chassis whose Lancia Integrale-derived 4WD drivetrain was already calibrated for rough roads – but never for the specific demands of sealed-stage competition, where surface irregularities arrive at speed and the margins between planted and airborne are measured in tenths. The 155 Q4’s combination of front-engine weight and split 4WD torque delivery makes suspension calibration a precise discipline: too soft and the front axle loses contact over crests; too stiff and you sacrifice rear traction on broken or patchy surfaces.

Every setting in this kit draws directly from XYZ Racing’s tarmac rally competition programme. The rear units are configured non-ride-height-adjustable to suit the AL05 platform’s suspension geometry – a deliberate specification choice that reflects how the 155 Q4’s rear subframe interacts with spring rate changes across compression and rebound.

What this coilover does for your 1992-1997 Alfa Romeo 155 Q4 TURBO 4WD

The primary job of this Tarmac Rally setup is tyre contact across deteriorated or patchy stage surfaces. On a chassis pulling from two axles simultaneously, keeping all four wheels loaded through uneven ground is the difference between 4WD working with you and against you. The construction absorbs large single-hit impacts – the kind that spike through standard dampers and briefly unload a tyre mid-corner – while managing the cumulative effect of rough pavement at stage speeds. Body movement after sharp jolts is suppressed quickly, which maintains the 155 Q4’s 4WD traction advantage through technical sections where chassis composure determines how much of that torque actually reaches the road.

About the Tarmac Rally coilover

XYZ Racing’s Tarmac Rally specification is a competition-oriented damper built for sealed surfaces in variable condition: smooth stretches, compressions, crests, and broken pavement all in a single stage. The calibration targets traction retention through uneven surfaces – absorbing impact energy without transmitting it to the body as unsettling movement – and every damping setting across the range has been developed from XYZ Racing’s direct tarmac rally competition experience. That baseline has been validated under stage conditions rather than extrapolated from road or circuit applications, which means the setup gives drivers a calibrated starting point rather than a generic map. For the 155 Q4 specifically, the rear unit’s non-ride-height-adjustable configuration is tailored to the platform’s geometry, maintaining consistent handling balance through the suspension travel range without disturbing the 4WD system’s torque split behaviour.

Fitment for the Alfa Romeo 155 Q4 TURBO 4WD (1992-1997)

Built to chassis code AL05, this kit covers the 155 Q4 Turbo 4WD from 1992 to 1997. The rear units are non-ride-height-adjustable, specific to this platform – the standard 155 TS uses a different rear suspension configuration and is not compatible with this specification. Verify your chassis code before ordering.

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The 155 Q4 is too capable – and too scarce – to run on suspension that doesn’t match how it delivers power. Configure yours below to finish the specification for your car.