XYZ Racing Top Sport Coilovers — Jaguar XJ (X351) 6 CYL (Fr FORK) (OE FOR REAR AIR STRUT) 2010-2019

The X351 XJ carries its aluminium unibody a long way past four metres, and even in six-cylinder form the nose sits under real weight from the transmission tunnel forward. Factory air struts at the rear were tuned for motorway comfort, not load control, and on a car built to cruise at speed they let the body float rather than settle. The XYZ Racing Top Sport coilover replaces that rear air strut arrangement with a coil-over damper built around the front fork-type strut mounting this chassis uses, giving the XJ a fixed, adjustable spring and damper setup in place of the air-spring compromise.

Top Sport is XYZ’s occasional-track-day spec: firm enough to control a large saloon’s body movement under braking and through a fast direction change, still compliant enough to drive home afterwards. For an XJ owner who wants sharper turn-in on a circuit day without living with a harsh ride the rest of the week, this is the sensible middle ground between the factory air setup and a full race kit.

What this coilover does for your 2010-2019 Jaguar XJ

Damping force is raised roughly 30-50% over a standard road setting, with spring rates lifted by around 2kg/mm versus the softer street spec. On the XJ’s long wheelbase that extra control matters most under trail-braking into a corner, where the nose would otherwise dive and load the front tyres unevenly. The stiffer, better-damped rear end keeps the body flatter over broken tarmac and motorway expansion joints, so the big saloon absorbs a sharp bump rather than passing the full jolt through to the cabin. Tyre contact patch stays more consistent through direction changes, which shows up as steadier, more predictable grip when you lean on the car rather than cruise it. Removing the air-strut variable at the rear also means the suspension responds the same way every time out, lap after the first lap and on the drive home.

About the Top Sport coilover

Top Sport is XYZ Racing’s fast-road-plus-track spec, built from damping and spring rate settings developed through the brand’s own Top Sport racing programme. Compared with a standard street coilover, damping force is increased by roughly 30-50% and spring rates are firmed up by around 2kg/mm, giving the shock body more control when a big saloon like the XJ compresses hard over an uneven surface or a kerb strike. That extra control is what keeps the body settled rather than pattering, and it is what lets the tyre keep working rather than skipping across the bump. The result is a kit tuned for drivers who want their XJ to hold a line confidently on an occasional track outing, while remaining civil enough for the drive there and back.

Fitment for the Jaguar XJ (2010-2019)

Fits the Jaguar XJ, chassis code X351, across the six-cylinder range built between 2010 and 2019. The kit is designed around this chassis’s front fork-type strut mounting and is specified as a direct replacement for the factory rear air strut, so no aftermarket bracket or bushing swap is needed at the rear axle. Confirm your car is a 6-cylinder X351 variant with the standard rear air suspension before ordering.

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Pick your spring rate and damping spec for your XJ in the configurator below.