
XYZ Racing Circuit Master Coilovers — Mazda 323 1989-1994
SKU: MA13-CM
- IncludesFull set of 4 (front + rear)
- Spring rate (F/R)22 / 12 kg/mm
- Top mountPillow ball + rubber / Hardened rubber
- Lead time10–15 working days
Fits Mazda 323 (1989-1994) chassis MA13
Added to basket ✓

The BG-generation Mazda 323’s chassis was always cleverer than its supermarket-runabout image suggested – light, willing, and on the GT-X and 4WD turbo cars genuinely quick across a B-road. Three decades on, the factory dampers are long past their sell-by date, and a worn-out 323 reveals every flaw the platform’s softly-sprung tune was hiding. The XYZ Racing Circuit Master coilover for the Mazda 323 1989-1994 rebuilds the car from the ground up as a sharper, more deliberate machine.
This is the Circuit Master series – the bracket above XYZ’s road-biased offerings, aimed squarely at owners running track days, sprints, and time-attack sessions in a 323 they actually want to push.
What this coilover does for your 1989-1994 Mazda 323
Body roll on the BG 323 disappears almost entirely with the Circuit Master fitted. The pillar-ball top mounts feed steering inputs straight into the chassis instead of through rubber, so turn-in becomes immediate rather than progressive – exactly what a small, short-wheelbase hatch needs to rotate cleanly on entry. 30-level damping adjustment lets you bias the car nose-light for autotest work or settle it down for high-speed circuit laps. Ride height is fully adjustable on independent spring perches, so corner weights can be set properly rather than guessed at. On a chassis this old, the gain in body control is the difference between driving the car and driving around the car.
About the Circuit Master coilover
XYZ’s Circuit Master is a 30-way damper-adjustable monotube coilover designed for circuit use first and street manners second. Construction is hardened-steel shell with a piston design optimised for high-frequency inputs – kerbs, rumble strips, and the repeated compression cycles a track session loads into the dampers. Spring rates are matched to the chassis and intended use rather than borrowed from a generic catalogue. Pillar-ball upper mounts replace the OE rubber to eliminate compliance under load. Ride height adjusts on the spring perch, separately from preload, which is the correct way to corner-weight a car. It is a serious circuit coilover wearing the bodywork of a hatchback that most people forgot existed.
Fitment for the Mazda 323 (1989-1994)
This kit fits the BG-generation Mazda 323 (chassis code MA13) built between 1989 and 1994. Confirm your chassis code against the VIN plate before ordering, particularly if your car is a UK GT or imported GT-X / 4WD turbo – the BG family covered several drivetrains during its run.
What buyers also search for
- Mazda 323 BG suspension upgrade for track days
- Mazda 323 GT-X coilover with adjustable damping
- 1989-1994 Mazda 323 ride height adjustment for stance and handling
- Circuit Master coilover for early-90s Japanese hatchbacks
- Mazda 323 4WD turbo suspension rebuild parts
The BG 323 is a rare car to find this depth of bolt-on chassis hardware for – configure yours below.
Because its 3 adjustment knobs with small oil hole design, when driving through big bumps, the coilover oil will go through small passage which might cause some small noise. This is normal situation. This product is made for circuit tracks and there will be no concern for bumps on the tracks.
Top mounts included with your kit
Every XYZ Racing coilover kit ships with the upper mounts listed below for your exact chassis — no extra parts to source.
Pillow ball + rubberP+Pillow-ball upper with a rubber insert — adds steering precision and camber adjustability while keeping some of the factory mount’s harshness damping.
Hardened rubberRHardened rubber upper — firmer than the factory bush for tighter response while retaining road-friendly noise and vibration isolation.
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Brakes for this car
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