XYZ Racing Circuit Master Coilovers — Nissan TEANA J31 4 CYL (Modified Rear Integrated) 2003-2008

The Teana J31’s rear end left the factory with a separate spring and damper set up for a comfort-biased executive saloon, not for holding a line under load. XYZ Racing’s Circuit Master kit for this chassis replaces that arrangement with a fully integrated rear coilover, giving a car nobody expects to see on a circuit the adjustability it needs to actually stay there.

Circuit Master is XYZ Racing’s dedicated track-day and sustained lap-time platform, built around repeat sessions rather than a single quick run. On a four-cylinder J31 Teana, that means a rear suspension that can finally be tuned to match the front rather than left to soak up comfort-tuned compliance.

What this coilover does for your 2003-2008 Nissan Teana J31

Front-wheel-drive saloons like the Teana carry their weight over the nose, and the factory rear damping does little to check that weight shifting rearward under braking or loading up mid-corner. With the rear spring and damper now integrated into one coilover unit, ride height at all four corners becomes independently adjustable, so the Teana’s stance and corner weights can be set up rather than inherited from the factory. The damper’s adjustment range – split across three external knobs for a combined 9,720 settings – lets you separate low-speed compression control (body control under braking and turn-in) from high-speed response (how the car reacts to a kerb or a mid-corner bump) instead of compromising on one dial. On a car this size, that granularity is what turns vague, floaty turn-in into something you can actually place on track.

About the Circuit Master coilover

Circuit Master sits at the top of XYZ Racing’s range and is built specifically for circuit use rather than fast-road duty. It’s run and validated by XYZ Racing’s own teams across international events, with development feedback folded back into the damper’s internal design rather than left as a fast-road generalist. The headline feature is the three-knob adjustment system, which between them generate 9,720 distinct damping combinations – enough range to retune the car between a slow, bumpy club circuit and a fast, smooth one without swapping parts. That range comes from a small-oil-hole internal passage design; on rough surfaces this can produce a faint noise as oil moves through the restricted channel, which is expected behaviour rather than a fault, and is a non-issue on the smooth tarmac this damper is built for.

Fitment for the Nissan Teana J31 (2003-2008)

This kit is built for the Nissan Teana J31, four-cylinder, 2003 to 2008, under XYZ Racing’s NI49 chassis code, specifically for the modified rear-integrated configuration that converts the factory separate rear spring/damper into a single coilover assembly. Confirm your Teana is the four-cylinder variant within this year range before ordering, as coilover ranges differ by engine and chassis revision.

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Pick your damping and ride-height spec for the NI49 Teana J31 and configure yours below.