Big Brake Kit
XYZ Racing Hollow Front Brake Kit — Jaguar SOVEREIGN 3.2 (X300) (1994-1997)
SKU: XYZ-BRK-BKF-JA-002-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø380–444 mm
- Caliper pots8 / 12-pot
- Lead time10–15 working days
Fits Jaguar SOVEREIGN 3.2 (X300) (1994-1997)
Added to basket ✓
Caliper render for this kit:
The X300 Sovereign arrived as Jaguar’s considered reply to the criticism that the XJ40 had been assembled under pressure. The 3.2-litre AJ16 straight-six sits well forward in the engine bay, creating a front-heavy weight bias that, across the Sovereign’s substantial kerb weight, puts serious demands on those front calipers when you are scrubbing speed on a fast A-road or catching the car at the limit through a damp roundabout.
Jaguar’s original front brakes were calibrated for composure rather than repeat performance. Three decades on, most X300s have suffered the gradual deterioration that comes with age: longer stopping distances, moisture-compromised hardware and a pedal feel that has lost the precision it once had fresh from Browns Lane.
What this brake kit does for your 1994-1997 Jaguar SOVEREIGN 3.2 (X300)
The XYZ Racing front big brake kit addresses the X300’s real braking vulnerability: a combination of nose-biased mass and an OEM system never specced with sustained hard use in mind. The two-piece floating disc reduces rotating and unsprung mass at the front axle, which on a front-heavy platform translates into more responsive steering feel and less momentum fighting you during mid-corner corrections. The hollow-vane rotor sheds heat through increased internal airflow, resisting the fade that repeated heavy stops from motorway speeds induce through an ageing OEM system. The floating bell keeps the disc flat as it heats, and braided lines restore the firm, precise pedal that aged factory hoses have long since lost.
Three pad compounds let you configure the kit to your use case. Street is the quiet, low-dust default for a Sovereign in regular road duty. Sport adds bite and a wider heat range for spirited road work. Racing is the dedicated track compound for owners who put the X300 through historic events or long fast-road days where temperatures climb and OEM hardware shows its limits.
About the front big brake kit
The hollow-body forged caliper is standard, paired with a two-piece floating disc whose construction removes material from the disc body without compromising the friction surface or structural integrity under heat cycling. The result manages temperatures more effectively under sustained braking than a conventional solid equivalent. Discs are offered drilled or slotted at the same price, and centre bell upgrades come as two-tone anodizing in five colours, or titanium, selectable at checkout.
Caliper finish is specified at the point of order. Included painted colours are Red, Yellow, Gold, Black and Anodized Black at no extra cost. For a Sovereign carrying its original finish, Black is the understated choice; Red is the call for owners who want the brake hardware to declare itself through open-spoke alloys. A Custom Color in any Pantone is available for £150, and the premium polished-forged and candy ranges (Titanium, Polished Gold, Polished Silver, plus Candy Teal, Candy Blue, Candy Red and Candy Orange) extend the palette further. For circuit work, the optional Hollow Racing caliper deletes the dust cover, is rated to 1000C and carries a two-year warranty.
Fitment for the Jaguar SOVEREIGN 3.2 (X300) (1994-1997)
This kit is configured for the Jaguar Sovereign 3.2 (X300) saloon, covering the full 1994 to 1997 production run. Confirm your chassis against the X300 designation before ordering, as the platform ran alongside XJR and XJ6 variants across the same body generation and brake specifications differ between them.
What buyers also search for
- Jaguar X300 Sovereign front brake upgrade for the platform’s front-axle braking demands
- XYZ Racing two-piece disc kit for Jaguar X300 with Street, Sport, and Racing compounds
- Jaguar Sovereign 3.2 big brake kit replacing aged original front calipers
- Front brake upgrade for Jaguar XJ X300 generation with custom Pantone caliper finishes
- Jaguar X300 front brake kit reducing unsprung mass for improved steering response and fade resistance
The X300 Sovereign was built to cover ground with authority. Select your pad compound, caliper finish and disc style from the options above to restore and sharpen that front-axle confidence.
What’s in the kit
Front axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 380–444 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 8 / 12-pot
- 2×High-stiffness mounting brackets
- 2×Braided stainless steel brake lines
- 4×High-performance brake pads (1 set)
- 1×Fitting hardware & tools pack
Choosing your spec
Every kit is built to order around the choices you make above. Here is what each option actually changes, so you can spec yours with confidence.
Brake pads — Street, Sport or Racing
Every kit ships with a full set of high-performance pads; the compound is your call.
Street is the right default for fast-road driving — a strong, progressive cold bite with low noise, low dust and long disc life. Sport raises the working temperature and adds bite and fade resistance for hard road use and the occasional track day, while still behaving on a cold morning. Racing is a track compound built for sustained abuse: huge fade resistance and bite once heat is in it, at the cost of more noise and dust when cold. Match the pad to how hard you actually use the brakes — there is no benefit to a race pad that never gets up to temperature.
Caliper grade — Hollow vs Hollow Racing
Hollow is the standard caliper on every kit: a hollow-body forged caliper, lighter than a solid one, fitted with a dust cover and backed by a 5-year oil-leak warranty. For most fast-road and spirited track use it is all the caliper you need.
Hollow Racing is the track-grade upgrade. It runs the same hollow body but without a dust cover (so there is nothing to melt at sustained high temperature), uses a twin-metal piston that isolates heat travelling from the disc to the oil seal, and is rated to 1000°C. Available 286–380mm (front). Warranty is 2 years on oil leaks and 10 years on appearance. Built for professional racing and repeated track days.
Caliper colour & finish
Painted colours (Red, Yellow, Gold, Black, Anodized Black) are included at no cost. Want an exact match to your car? Custom Color (+£150) paints the calipers to any Pantone code you supply (15–20 day lead time).
Polished Forged finishes are the flagship: a forged caliper given a mirror-polished surface treatment that shifts colour with the viewing angle. Beyond the looks, the polished surface dissipates heat better, resists rust and stands up to the weather. Choose Titanium (neochrome, +£350), Polished Gold (+£300) or Polished Silver (+£250). They look their best paired with a titanium centre bell. Care: clean only with a dilute neutral cleaner or water.
Candy colours (+£200) use a deep candy-paint and polishing process for a mirror-reflection, boutique finish — pick Teal, Blue, Red or Orange (shown below right).
Centre bells
The centre bell is the CNC-machined aluminium hat that joins the disc to the hub. The standard anodized centre bell is included. The Two-tone bell (+£200) adds an anodized accent ring — choose Red, Yellow, Orange, Purple or Silver right here at checkout. The Titanium centre bell (+£500) is a forged titanium bell (bolts not included) that finishes off the polished-forged look.
Same car
Other products that fit this vehicle
Front & rear brake kits, coilovers and more for this car
