XYZ Racing Hollow Rear Brake Kit — Jaguar SOVEREIGN 3.2 (X300) (1994-1997)

The X300-generation Sovereign carries the better part of 1.7 tonnes of long-bonneted Jaguar luxury, and a good share of that mass loads onto the rear axle the instant you brake hard from motorway pace. The XYZ Racing rear brake kit for the Jaguar Sovereign 3.2 (X300) targets the back end specifically, where the factory discs were only ever sized for a sedate executive saloon rather than the brisk, fully laden driving these AJ16 cars still get put to in 2026.

This is a rear-axle pair built around two-piece floating discs, trimming rotating mass while opening up more surface for heat to escape. For owners keeping a 1994-1997 Sovereign as a fast cruiser or a cherished weekend classic, it restores stopping authority at the end of the car that Jaguar left most conservative.

What this brake kit does for your 1994-1997 Jaguar Sovereign 3.2 (X300)

The first thing you feel after fitting is a firmer, more progressive rear pedal as you trail-brake into a roundabout or slip road. The hollow-vane discs reach working temperature quickly and shed it readily, so a run of heavy stops on a quick A-road no longer leaves the rear axle going soft. Three pad compounds let you match the car to its job: the Street compound keeps the quiet, low-dust manners a Jaguar owner expects, the Sport compound adds bite for spirited road use, and the Racing compound holds friction when the saloon is loaded or driven hard. Because the kit works the rear, it also sharpens overall brake balance, taking some of the diving, nose-heavy feel out of an emergency stop.

About the Hollow rear brake kit

The kit is a complete rear-axle pair: a left and right caliper, two-piece floating discs, and your chosen pads, so there is no risk of mixing mismatched parts. The hollow-vane rotor casting cuts rotating and unsprung mass without giving up the thermal capacity a heavy saloon demands, and less mass at the wheel means the AJ16’s brakes respond faster and recover sooner between applications. The caliper is hollow-body as standard, with an optional Hollow Racing upgrade for hard use that loses the dust cover, is rated to 1000C and carries a two-year warranty. Calipers are painted at no extra cost in Red, Yellow, Gold, Black or Anodized Black, with a Custom Color in any Pantone for £150 and premium polished-forged (Titanium, Polished Gold, Polished Silver) or candy (Candy Teal, Candy Blue, Candy Red, Candy Orange) finishes, which counts on a car whose wheels often sit open enough to show the hardware behind them. Pad friction is selectable across Street, Sport and Racing compounds, so one kit suits a pampered concours Sovereign or one that earns its keep on long, quick journeys. Discs come drilled or slotted at the same price, with two-tone anodized or titanium centre bells selectable at checkout.

Fitment for the Jaguar Sovereign 3.2 (X300) (1994-1997)

This kit is cut for the rear axle of the Jaguar Sovereign 3.2 (X300), the AJ16-engined version of the X300 XJ built between 1994 and 1997, and fits as a pair of rear calipers and discs. It mounts to the rear hubs of that chassis specifically. Confirm your build year falls inside the 1994-1997 span, then choose your caliper colour and pad compound when you order.

What buyers also search for

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• Rear brake balance improvement for the AJ16 Sovereign saloon

Choose your pad compound and caliper colour, then set up your Jaguar Sovereign 3.2 (X300) rear brake kit using the options above when you order.