XYZ Racing Circuit Master Coilovers — Toyota CELICA ST185 4WD TURBO (Mcpherson Type) 1989-1993

The ST185 GT-Four carries a turbocharged 3S-GTE and a full-time four-wheel-drive system over its front axle, and the factory damping was always a road-biased compromise built around that weight. On a circuit, the standard struts run out of control long before the chassis does. The XYZ Racing Circuit Master coilover for the Toyota Celica ST185 4WD Turbo is built specifically for sustained lap-time work, where heat, repeated load reversals and kerb strikes punish anything softer.

This is the firmest, most adjustable platform in the XYZ range, sitting above the road and drift-spec kits. For a Group A homologation car that earned its reputation on rally stages, putting it back on tarmac with proper damper control is the obvious next step for owners chasing consistent circuit pace.

What this coilover does for your 1989-1993 Toyota Celica ST185 4WD Turbo

The Circuit Master gives you ride-height adjustment to set corner weights across the 4WD platform, plus damping range deep enough to control that heavy nose under hard braking into a hairpin. Lowering the centre of gravity tightens the ST185’s body roll, so the AWD system can put power down on corner exit instead of washing into understeer. Firmer, controlled rebound keeps the rear planted through fast direction changes, and the wide adjustment spread means you can run a stiffer track setup at the circuit and back it off for the drive home. With three separate adjustment knobs, you tune compression and rebound independently rather than chasing one compromise.

About the Circuit Master coilover

The Circuit Master is XYZ Racing’s competition-grade damper, drawn from the same design family as their Racing, Drift and Tarmac Rally specs and developed for international circuit use. XYZ quote 9720 distinct adjustment combinations across the three knobs, giving an enormous tuning window for spring rate, valving and ride height. That three-knob layout uses a small oil-orifice design, which is why a faint noise can occur over large bumps as oil moves through the narrow passage. This is normal behaviour and a by-product of the circuit-focused valving rather than a fault. XYZ test the Circuit Master with race teams worldwide, and it is engineered for smooth track surfaces rather than broken public roads, so it suits owners who genuinely use their ST185 on circuit.

Fitment for the Toyota Celica ST185 4WD Turbo (1989-1993)

This kit is specified for the Toyota Celica ST185 4WD Turbo, chassis code TO18, covering the 1989 to 1993 production run with MacPherson-type front suspension. Confirm your chassis code and strut type against the listing before ordering.

What buyers also search for

• Toyota Celica ST185 GT-Four coilover upgrade for circuit and track-day use
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• Three-way adjustable coilover for the 1989-1993 Celica GT-Four
• ST185 MacPherson-type coilover with independent compression and rebound tuning

Set your spring rate, ride height and damping preference and configure yours below.