XYZ Racing Circuit Master Coilovers — Honda CIVIC EF CRX SINGLE CAM (Rear FORK) 1989-1991

The EF-chassis CRX is a 900kg car with a wheelbase shorter than a modern hot hatch’s front overhang, and that geometry is what makes it so rewarding – and so unforgiving – on a circuit. Get the damping wrong and the rear fork suspension will step out mid-corner before you’ve finished asking it to rotate. The Circuit Master coilover for the 1989-1991 Honda Civic EF CRX Single CAM is built specifically for owners running this chassis in anger on track, where consistency over a 20-minute session matters more than ride compliance.

This is XYZ Racing’s competition-spec damper – the same hardware family used in their Racing Spec, Drift Spec and Tarmac Rally programmes – tuned for the rear-fork EF platform. It is not a fast-road kit pushed harder; it is a circuit damper first, road-legal second.

What this coilover does for your 1989-1991 Honda Civic EF CRX Single CAM

On a CRX this light, body control is everything. The Circuit Master pins the chassis flat through quick direction changes, so you can actually use the throttle on corner exit instead of waiting for the rear to settle. The three-knob adjustment – separate compression high, compression low, and rebound – means you can stiffen low-speed control to kill roll without making the high-speed compression so harsh that kerbs unsettle the car. Brake confidence steps up noticeably: less nose-dive into Druids-style downhill braking zones, more predictable weight transfer onto the front tyres. For a Single CAM EF, where you’re carrying speed rather than power, that recovered front-end bite is where the lap time actually lives.

About the Circuit Master coilover

Circuit Master is XYZ Racing’s competition damper, sitting alongside their Racing Spec, Drift Spec and Tarmac Rally builds in the top tier of the range. It has been developed and validated by XYZ race teams on international circuits, with long-duration testing rather than dyno-only sign-off. The headline figure is 9720 individual damper settings across the three adjustment knobs, which sounds excessive until you’ve spent a weekend chasing temperature changes between morning practice and afternoon qualifying. One known characteristic: the small oil-passage design that gives the damper its precision can produce a faint hydraulic note when the car crashes over heavy road bumps. That is the construction working as intended – the passage geometry is optimised for circuit surfaces, not for broken B-roads.

Fitment for the Honda CIVIC EF CRX SINGLE CAM (Rr FORK) (1989-1991)

This kit is built for the EF-generation Honda Civic CRX Single CAM with the rear-fork suspension layout, chassis code HN12, model years 1989 through 1991. The rear-fork designation matters – it is a different mounting interface to the later double-wishbone EF cars, and the kit is specified accordingly.

What buyers also search for

• Honda Civic EF CRX coilovers for track day and sprint use
• HN12 chassis suspension upgrade with three-way damping
• Rear-fork EF CRX circuit setup with adjustable high and low-speed compression
• 1989-1991 CRX Single CAM coilover kit for sustained lap-time work
• Honda CRX competition damper used by international race teams

The Circuit Master is the right pick if you’re running a Single CAM CRX on circuit and want the same damper platform XYZ’s race programmes use – configure your spec below.