XYZ Racing Street Advanced Coilovers — Fiat BERTONE X1/9 1982-1989

The Bertone-era X1/9 is one of the most honest mid-engined chassis Britain still sees on a B-road – light, balanced, and utterly dependent on its dampers behaving themselves. Forty-odd years on, most surviving cars are riding on tired OEM struts that mask what the Dallara-influenced geometry can actually do. The XYZ Racing Street Advanced coilover for the Fiat Bertone X1/9 sets that right.

This is the road-and-occasional-trackday spec in the XYZ range, built around 720-way damping and a wind-up spring platform sized for the X1/9’s modest 900kg kerb weight. It is the kit for owners who want the car to sit how Bertone’s stylists imagined it, without turning a Sunday driver into a kidney-punisher.

What this coilover does for your 1982-1989 Fiat Bertone X1/9

Drop ride height in measured turns and the X1/9’s pop-up nose finally sits level with its rear haunches – the stance the car was designed around before decades of sagging springs ruined the proportions. The 720-way damping range matters here because a 1300/1500 mid-engined car needs far less compression force than a hot hatch; you can wind the dampers right back for cobbled town streets, then add clicks for a B-road blast without ever touching a spanner. Body roll through the X1/9’s quick-rack steering tightens up, mid-corner attitude becomes something you set with the throttle rather than fight with the wheel, and trail-braking into a hairpin stops feeling like the rear is two beats behind the front. On corrugated tarmac the coilover absorbs impacts the original struts simply transmit straight into the bulkhead.

About the Street Advanced coilover

Street Advanced sits in the middle of the XYZ catalogue and is the series the factory team has refined over years of road and circuit development. It is engineered specifically for fast-road use with occasional track work – not a dual-purpose compromise, but a road damper that can take a session at Cadwell without fading. The headline spec is 720 individual damping settings on a single combined adjuster, giving genuinely usable range rather than the on-paper numbers some kits claim. Construction is geared toward longevity on UK roads: the bodies handle salt-belt winters, and the spring platforms thread cleanly enough to set corner weights at home. XYZ describes it as the most popular product in the range, refined after testing in worldwide race series and built for drivers who want speed and control without sacrificing the ability to drive the car every day.

Fitment for the Fiat Bertone X1/9 (1982-1989)

This kit is specific to the Bertone-built X1/9 produced from 1982 through to the end of production in 1989, chassis code FI03 – the cars sold under Bertone badging after Fiat ended their own production run. It covers both 1300 and 1500 variants from that period. Confirm your chassis plate before ordering; pre-1982 Fiat-badged X1/9s use different mounting hardware.

What buyers also search for

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The X1/9 deserves to feel like the proper junior Lancia Stratos it always was – configure yours below.