XYZ Racing Tarmac Rally Coilovers — Mazda RX7 FC3S 1985-1991

The FC3S sits on a chassis that was sharp when new and is now four decades into a life most owners never planned for. Bushes are tired, the rear multi-link has settled, and the standard struts were never designed for the spring rates a modern tarmac stage demands. The XYZ Racing Tarmac Rally coilover for the Mazda RX7 FC3S rebuilds the corners from the ground up with rates and damping that match what a rotary-powered rear-driver actually does over a broken sealed surface.

Tarmac rally is the brief: stiff enough to stop the nose diving into a hairpin under threshold braking, compliant enough to keep the inside rear loaded when the surface breaks up mid-corner. On a 13B-powered FC weighing barely over 1,200kg, that balance matters more than outright spring rate.

What this coilover does for your 1985-1991 Mazda RX7 FC3S

Tarmac rally damping is built around recovery, not just control. Hit a mid-corner ridge in a standard FC and the rear axle skips; with the Tarmac Rally setup the damper absorbs the input and re-plants the tyre before throttle is reapplied. Ride height adjustment lets you set the car low enough to keep the roll centre sensible without the front splitter scraping every camber change. Adjustable damping means you can run the car softer on a rough loose-surface link stage and firmer on smoother sections without changing springs. For a rotary that lives on momentum, that consistency under the rear axle is what turns lap time into stage time.

About the Tarmac Rally coilover

XYZ Racing’s Tarmac Rally series is engineered specifically for sealed-surface competition use – rallysprints, tarmac stages, and hill climbs where the surface is grippy but rarely smooth. Monotube damper construction handles the heat cycling of repeated stage runs without fade, and the larger piston area gives finer low-speed control than the twin-tube units fitted to lesser kits. Spring rates are selected for the chassis weight and front/rear balance of the specific platform, with damping valved to suit. Pillowball top mounts on the front sharpen turn-in response and let you run measurable static camber without the compromise of rubber bushing deflection. Ride height is set via the lower bracket so spring preload stays independent of static height, which keeps the damper working through its designed stroke.

Fitment for the Mazda RX7 (1985-1991)

Direct-fit for the FC3S chassis RX7 across the full 1985-1991 production run, covering Series 4 and Series 5 cars including naturally aspirated and turbo II variants. No modification required to standard mounting points front or rear.

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Spec your damping preference and ride height range, then build yours below.