
XYZ Racing Hollow Rear Brake Kit — Hummer H2 (2003-2009)
SKU: XYZ-BRK-BKR-HU-001-REAR
- IncludesRear axle pair (2 discs + 2 calipers)
- PositionRear
- Disc Ø380–421 mm
- Caliper pots8-pot
- Lead time10–15 working days
Fits Hummer H2 (2003-2009)
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Caliper render for this kit:

The Hummer H2 tips the scales at close to 2,900kg before you add passengers, fuel or a trailer, and all of that mass loads onto a rear axle that the standard discs were never really sized to manage. Hard descents, repeated stops on a long motorway run, or towing on a hot day are exactly the conditions where the factory rears run out of thermal headroom and the pedal goes long. This XYZ Racing Hollow Rear Brake Kit is the answer to that specific problem on the 2003-2009 H2.
It is a larger-diameter rear setup built to absorb and shed the heat a vehicle this heavy generates under braking. Rather than chasing outright stopping distance alone, it targets the thing H2 owners actually complain about: brakes that work the first time and fade the third. Pad compound is selectable across Street, Sport and Racing, so the kit can be set up for a daily-driven truck, a towing rig, or harder repeated use.
What this brake kit does for your 2003-2009 Hummer H2
On a body-on-frame SUV this size, the gain you feel first is consistency. The larger rear rotor and increased pad area give the system more thermal mass, so the pedal stays firm through a sequence of stops instead of softening as the standard discs heat-soak. That matters most when the H2 is loaded or descending a long gradient, where rearward weight transfer puts real work through the back axle. Choosing the Racing pad compound sharpens initial bite and raises the fade threshold for owners who tow heavy or use the truck hard; the Sport compound steps up everyday bite, while the Street compound keeps noise and dust manageable for a road-driven H2. The result is braking you can lean on repeatedly without the creeping fade that the factory rear setup is known for.
About the Hollow rear brake kit
The Hollow rear kit is XYZ Racing’s heavy-vehicle rear upgrade, designed around the simple reality that stopping power on a large SUV is a heat-management problem first. The kit uprates the rear disc and caliper assembly over standard to add the thermal capacity a 2,900kg platform demands, with the two-piece floating rotor and mounting hardware sized as a direct-fit package for the H2’s rear axle. The hollow-bodied caliper is standard across the range, and the rotor sheds heat faster than the solid factory casting. Pad compound is offered in three grades: Street for quiet, low-dust manners, Sport for a firmer everyday bite and more heat range, and Racing for the highest fade resistance under sustained load. Discs come drilled or slotted at the same price. The caliper finish is fully specifiable, with Red, Yellow, Gold, Black and Anodized Black at no extra cost, plus premium polished-forged Titanium, Polished Gold and Polished Silver, candy Teal, Blue, Red and Orange, or any Pantone shade as a custom colour. It is a rear-axle kit, intended to pair with a matched front upgrade rather than to carry the whole job alone.
Fitment for the Hummer H2 (2003-2009)
This kit is built specifically for the rear axle of the Hummer H2 across the full 2003 to 2009 model run. It mounts to the factory rear hub as a direct-fit package, so no modification to the standard axle is required. Confirm your year against the options above before ordering.
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Pick your pad compound and caliper colour and confirm your year when you order the rear kit.
What’s in the kit
Rear axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 380–421 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 8-pot
- 2×High-stiffness mounting brackets
- 2×Braided stainless steel brake lines
- 4×High-performance brake pads (1 set)
- 1×Fitting hardware & tools pack
Parking brake: Retains your original (OE) handbrake.
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 330–356mm (rear). 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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