XYZ Racing Circuit Master Coilovers — Toyota SUPRA J29/ A90 (Modified Rear Integrated) (Cancellation Kit for Electronic Damping) 2019-2026

The A90 Supra left the factory with adaptive electronic dampers wired into the car’s stability and drive-mode systems, which is exactly why a proper coilover swap on this chassis needs more than just new springs and struts. XYZ Racing’s Circuit Master kit for the Supra J29/A90 pairs a manually adjustable damper with a cancellation kit for the OEM electronic damping control, so the ECU stops hunting for sensors that no longer exist and throwing warnings on the dash.

Circuit Master is XYZ Racing’s dedicated track-day platform, built for drivers doing repeated hot laps rather than the odd trackday sighting run. On a chassis with the Supra’s B58-driven, near-even weight split, that means damping control that can actually keep pace with sustained cornering loads instead of fading after a handful of laps.

What this coilover kit does for your 2019-2026 Toyota Supra

Removing the factory adaptive dampers and their electronic dependency gives you a fixed, mechanical baseline you can tune session to session, which matters on a car that otherwise defaults back to whatever compromise BMW’s software picked for road use. With 9720 combinations of damping adjustment available through the kit’s three external knobs, you can separate compression and rebound behaviour front and rear to suit a specific circuit’s kerbs and camber changes rather than accepting one blanket setting. Lowering the ride height also drops the centre of gravity on a car that’s already close to 50:50 front-to-rear, sharpening turn-in without upsetting the balance the Supra’s chassis was designed around. Because the cancellation kit is built into this fitment, the swap doesn’t leave you fighting dash warnings or a stability system that thinks parts are missing.

About the Circuit Master coilover

Circuit Master sits at the top of XYZ Racing’s coilover range and is developed and validated with input from XYZ’s own racing teams competing on circuits internationally, rather than being a road kit adapted for track use. The three-knob damper design routes oil through a small-bore passage to deliver its 9720-way adjustment range, which is a deliberately fine-grained setup for dialling in compression and rebound independently rather than a single combined dial. Because that oil passage is narrow, you may notice a faint noise over sharp bumps and kerbs at certain settings; this is a normal characteristic of the design and not a fault, and it’s the trade-off for the adjustment resolution the damper offers. Construction is aimed squarely at repeated circuit sessions rather than daily comfort, with damping control intended to hold its setting through a full lapping day instead of drifting as oil temperatures climb. For the Supra specifically, XYZ Racing builds this Circuit Master fitment around the "modified rear integrated" mounting solution needed to adapt the kit to the car’s rear multi-link suspension.

Fitment for the Toyota Supra J29/A90 (2019-2026)

This kit is built for the J29/A90-chassis Supra across the 2019-2026 model years, using the modified rear-integrated mounting arrangement required for this platform’s multi-link rear end. It includes the cancellation kit for the factory electronic damping system as standard, so no separate resistor kit or workaround is needed to keep the dash clear of adaptive-suspension fault codes.

What buyers also search for

• Toyota Supra J29/A90 coilover upgrade with electronic damper cancellation
• Toyota Supra track coilovers with independently adjustable compression and rebound
• Toyota Supra Circuit Master damping setup for repeat lapping sessions
• A90 Supra suspension kit built around the rear integrated-link mounting

Spec your damping range and ride height for the Supra J29/A90 in the configurator below to build your kit.