Big Brake Kit
XYZ Racing Hollow Front Brake Kit — Jeep WRANGLER JK (2007-2018)
SKU: XYZ-BRK-BKF-JE-001-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø380–444 mm
- Caliper pots8 / 12-pot
- Lead time10–15 working days
Fits Jeep WRANGLER JK (2007-2018)
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Caliper render for this kit:
The JK Wrangler’s factory brake hardware was sized for a largely standard truck: stock ride height, factory-spec wheels and the kerb weight of a base build. Add a three-inch lift, step up to 35-inch tyres and bolt on a steel front bumper with a recovery winch, and you have rewritten the stopping calculation entirely. More unsprung weight, greater rotational inertia and substantially higher thermal demand on a front axle that was already doing the majority of the braking work.
The XYZ Racing front big brake kit for the Jeep Wrangler JK addresses that modified-truck reality directly. Available in three pad compounds, selected at order, the kit configures around actual use rather than a generic compromise, and a full caliper finish range means the hardware is as considered as the rest of the build.
What this brake kit does for your 2007-2018 Jeep WRANGLER JK
On a stock JK the factory brakes manage thermal load adequately for moderate use. On a lifted, loaded truck descending a sustained gravel incline with a roof tent and a full recovery kit aboard, the standard hardware reaches its limits faster than most owners expect. The two-piece floating disc brings increased swept area and greater heat capacity, critical for the repeated moderate braking loads extended trail use generates. The hollow-vane rotor sheds heat through internal airflow, the floating bell keeps it flat under load, and braided lines firm the pedal for predictable feel.
Three compounds separate the duty cycles a single-compound stock setup conflates. Street is the quiet, low-dust default for road and mild trail use. Sport adds bite and a wider heat range for sustained road speeds and more frequent hard stops. Racing is the dedicated competition compound for operating temperatures that run consistently high. You select the compound when you order.
About the front big brake kit
The kit pairs a hollow-body forged caliper as standard with a two-piece floating disc, letting the buyer specify the operating profile that matches their use rather than accepting a mid-range compromise that neither excels on the trail nor holds up on track. 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.
Included painted caliper colours are Red, Yellow, Gold, Black and Anodized Black at no extra cost, so the front calipers can work with or against the JK’s build aesthetic rather than defaulting to anonymous grey. A Custom Color in any Pantone is £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. For competition use, the optional Hollow Racing caliper deletes the dust cover, is rated to 1000C and carries a two-year warranty. Concentrating the upgrade on the front axle reflects where deceleration physics place the greatest demand: the fronts carry the dominant share of braking force under any hard stop.
Fitment for the Jeep WRANGLER JK (2007-2018)
This kit covers the second-generation Jeep Wrangler JK across its full production span from 2007 through 2018, including both the two-door and four-door Unlimited bodystyles. Buyers on the Rubicon specification, which came from the factory with four-piston front calipers, should verify fitment compatibility against their existing caliper bracket and hub geometry before ordering.
What buyers also search for
- Jeep Wrangler JK front brake upgrade for lifted builds running 35s or 37s
- JK Wrangler big brake kit for trail, overland, and loaded descent applications
- Wrangler JK brake fade fix for modified, heavier builds and towing
- Jeep JK front caliper upgrade with Street, Sport, and Racing compounds for road and track
- XYZ Racing two-piece disc brake kit for Jeep Wrangler 2007 to 2018
Select your pad compound, caliper finish and disc style from the options above to build yours.
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.
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More XYZ products for the Jeep WRANGLER JK appear here as the rest of the range publishes.