
XYZ Racing Hollow Rear Brake Kit — Audi A5 8T SPORTBACK 2WD (TYPE II) (2011-2016)
SKU: XYZ-BRK-BKR-AU-04-K-REAR
- IncludesRear axle pair (2 discs + 2 calipers)
- PositionRear
- Disc Ø356–421 mm
- Caliper pots6 / 8-pot
- Lead time10–15 working days
Fits Audi A5 8T SPORTBACK 2WD (TYPE II) (2011-2016)
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Caliper render for this kit:

The 8T A5 Sportback carries its weight conspicuously forward. With the engine mounted longitudinally ahead of the front axle and drive going to the front wheels in 2WD form, the rear axle runs light and the factory rear discs spend most of their life loafing, right up until you brake hard into a corner, when the back of the car needs to stay settled. The XYZ Racing Hollow rear big brake kit exists to wake that rear axle up, giving it firmer, more consistent bite when the front end is already loaded.
This is the rear-specific half of a balance-led upgrade for the 2011-2016 A5. Two-piece floating discs cut rotating mass at each rear corner, while a choice of Street, Sport and Racing pad compounds lets you tune how much the rear contributes under braking. The aim is a rear axle that supports the nose rather than trailing behind it.
What this brake kit does for your 2011-2016 Audi A5 8T Sportback 2WD (type II)
On a nose-heavy 2WD chassis most stopping is done up front, so the gains here are about balance and stability rather than raw initial bite. Firmer, more linear rear braking steadies the car as you trail the brakes towards an apex and keeps the tail planted under hard deceleration. The Racing pad compound resists the fade that overheated factory rears suffer on repeated stops, while the Street and Sport compounds keep things quiet and low-dust for commuting and harder road use respectively. Lighter two-piece floating discs also reduce unsprung and rotating mass at the rear, sharpening how quickly the rear wheels settle. With selectable caliper colours, from the included painted finishes through to premium polished and candy options, the hardware reads as intent through the rear spokes.
About the Hollow rear brake kit
The rear brake kit is XYZ Racing’s rear-axle stopping package, named for the hollow-bodied caliper that comes as standard and paired with a two-piece floating disc that strips weight without giving up swept area. It pairs those discs with uprated calipers and a pad system offered in three compounds, Street for road use, Sport for harder fast-road driving, and Racing for circuit work, so the same hardware suits a daily Sportback or a weekend track tool. For the hardest use an optional Hollow Racing build drops the dust cover, is rated to 1000C and carries a two-year warranty. Included painted caliper colours are Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone for £150, premium polished-forged finishes in Titanium, Polished Gold and Polished Silver, and candy finishes in Teal, Blue, Red and Orange, letting the kit match or contrast the car. It is engineered as a rear complement to a front big brake kit, a matched pair of rear calipers and discs with braided lines, restoring front-to-rear balance on a platform that leans heavily on its front axle. The fitment is specific to the rear, slotting onto the existing rear hubs of the 8T A5.
Fitment for the Audi A5 8T Sportback 2WD (type II) (2011-2016)
This kit is cut for the 8T-generation A5 Sportback in 2WD (type II) form, covering the 2011 to 2016 model years. It fits the rear axle only, the rear position is confirmed in the specification, and is intended to pair with the matching front kit for the same chassis. Check that your build year falls within the 2011-2016 span before ordering.
What buyers also search for
- Audi A5 8T Sportback rear big brake kit for road and occasional track use
- 2WD A5 8T rear brake upgrade to restore front-to-rear balance
- Audi A5 Sportback Racing pad compound for fade resistance under repeat stops
- Two-piece floating disc rear brake kit with selectable painted, polished and candy calipers
- 2011-2016 Audi A5 rear brake kit that stays quiet and low-dust on the daily
Pick your disc style, pad compound and caliper colour for the 8T A5 Sportback from the options above.
What’s in the kit
Rear axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 356–421 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 6 / 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: Electronic parking brake (EPB) compatible.
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.

Other products that fit this vehicle
Front & rear brake kits, coilovers and more for this car
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More XYZ products for the Audi A5 8T SPORTBACK 2WD (TYPE II) appear here as the rest of the range publishes.