XYZ Racing Circuit Master Coilovers — Ford FOCUS ST HATCHBACK (Modified Rear Integrated) (Cancellation Kit for Electronic Damping) 2019-2026

The Mk4 Ford Focus ST left the factory with electronically controlled adaptive dampers wired into the car’s own loom, constantly recalculating damping force in a way that never lets you lock in a fixed baseline for a circuit. The XYZ Racing Circuit Master coilover for this Focus ST hatchback comes with an integrated cancellation kit that removes that OE electronic damping signal from the equation, so the car runs on fully mechanical, driver-set damping instead of fighting its own ECU for control lap to lap.

This spec is built around sustained circuit lap-time work rather than a single quick blast – repeated heat cycles, corner-entry weight transfer, and the front-wheel-drive Focus ST’s habit of loading its outside-front corner hard under trail braking. The Modified Rr Integrated fitment supplied with this kit is matched to the Mk4’s revised multi-link rear end, so it mounts to the standard rear geometry without adapter brackets working against the factory pickup points.

What this coilover brings to your 2019-2026 Ford Focus ST

With three external damping knobs to work through, you can set the front end firm enough to check dive under trail braking into a hairpin, then back the rear off a step to keep the Focus ST rotating rather than pushing wide through fast direction changes. Ride height drops through the full stroke of the damper body, pulling in the wheel gap and lowering the centre of gravity without relying on lowering springs that fight the factory geometry. Because the cancellation kit takes the adaptive damper’s constant recalculation out of the picture, whatever setting you choose at a track like Cadwell or Knockhill stays put through the session instead of softening as the OE system reads the road its own way. Back the compression off between track days and there’s enough compliance left for B-roads, while the extra negative camber from the drop sharpens turn-in on a chassis that’s already reasonably direct from the factory.

About the Circuit Master coilover

XYZ positions Circuit Master at the top of its coilover range, above the Racing Spec, Drift Spec and Tarmac Rally lines, for owners who want the most track-focused option the brand builds. Each damper uses three external adjustment knobs feeding a small-oil-hole valving design, and between them the combinations run out to roughly 9,720 distinct damping settings – more than any one build will use, but enough range to move from a soft trailered-in setting to a stiff qualifying setting without swapping hardware. XYZ’s own racing teams run this damper at circuits internationally, and the valving has been refined off the back of that race use rather than bench-tested alone. The trade-off of the small-oil-hole design is a faint tick or knock over sharp bumps and kerbs at low speed; that’s the oil finding its way through the passage doing exactly what it’s meant to, not a fault, and it disappears once the car’s up to circuit pace. The full ride-height adjustment built into the damper body means the kit is meant to be stripped, rebuilt and run again season after season.

Fitment for the Ford Focus ST Hatchback (2019-2026)

This kit lists against chassis code FO29-C, covering Ford Focus ST hatchbacks built between 2019 and 2026 that left the factory with adaptive electronic damping. The Modified Rr Integrated and cancellation-kit spec confirms both the rear mounting and the wiring bypass are matched to this generation’s multi-link rear end and adaptive-damper loom, so check your registration date falls inside that build window before ordering.

What buyers also search for

• Ford Focus ST Mk4 coilover upgrade for road and track use
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• Ford Focus ST electronic damping cancellation kit for coilover conversion
• Ford Focus ST Hatchback 2019-2026 circuit suspension setup

Pick your finish and confirm the fitment for your Focus ST, then build yours below.