
XYZ Racing Hollow Rear Brake Kit — Audi A5 8T SPORTBACK QUATTRO (TYPE II) (2011-2016)
SKU: XYZ-BRK-BKR-AU-04-I-REAR
- IncludesRear axle pair (2 discs + 2 calipers)
- PositionRear
- Disc Ø380–421 mm
- Caliper pots8-pot
- Lead time10–15 working days
Fits Audi A5 8T SPORTBACK QUATTRO (TYPE II) (2011-2016)
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Caliper render for this kit:

The B8-platform A5 Sportback hangs its longitudinal engine ahead of the front axle, so the standard quattro brake balance leans hard on the fronts while the rears are left comparatively undersized for sustained work. The XYZ Racing Hollow Rear Brake Kit for the Audi A5 8T Sportback Quattro (type II) addresses that, adding rear stopping capacity and thermal headroom exactly where the factory setup runs short.
Two-piece floating discs shed unsprung mass and vent heat faster than a solid rear rotor, which counts on a 1,600kg-plus fastback that asks its brakes to scrub speed repeatedly. Pad compound is yours to pick, from a quiet Street friction level to a full Racing compound for circuit days.
What this brake kit does for your 2011-2016 Audi A5 8T Sportback Quattro (type II)
On the road you feel it as a firmer, more progressive pedal and a car that settles under braking instead of diving onto its nose. Push harder, with repeated heavy stops or back-to-back braking zones on track, and the two-piece floating discs hold temperature where the original rear brakes would begin to fade. The Street pad keeps daily refinement and low dust, the Sport compound bites harder from cold, and the Racing compound keeps its friction at the temperatures a tracked quattro generates. More capable rear brakes also let you trail-brake deeper into a corner, since the rear axle can take load the front would otherwise carry alone.
About the Hollow Rear Brake Kit
The rear brake kit is built around a two-piece floating disc, where material is removed from within the rotor to cut rotating and unsprung weight without giving up swept area. Less mass at the wheel sharpens response and eases the demand on the suspension, while the vented sections aid airflow and heat dissipation under repeated use. The caliper is hollow-bodied as standard to keep weight down, with an optional Hollow Racing build for circuit use that drops the dust cover, is rated to 1000C and carries a two-year warranty. Discs are paired with your chosen pad compound, offered in Street, Sport and Racing friction levels so the brake can be matched to road, fast-road or circuit use. 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, so the setup reads cleanly behind an open wheel. It is a rear-axle kit, a matched pair of rear calipers and discs with braided lines, designed to work alongside the front brakes to set overall balance rather than act in isolation.
Fitment for the Audi A5 8T Sportback Quattro (type II) (2011-2016)
This kit is cut for the Audi A5 8T Sportback Quattro (type II) built between 2011 and 2016, the B8 fastback with quattro all-wheel drive. It fits the rear axle. Confirm your exact year and trim before ordering, as rear disc dimensions can differ across the 8T range.
What buyers also search for
- Audi A5 8T Sportback Quattro rear brake upgrade for road and track use
- Two-piece floating rear discs for an Audi A5 that resist fade under repeated braking
- Audi A5 8T rear big brake kit with Street, Sport or Racing pad options
- Caliper colour choices to match an A5 Sportback’s wheels and finish
Pick your disc style, pad compound and caliper colour from the options above to build your A5 8T rear brake 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: 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 QUATTRO (TYPE II) appear here as the rest of the range publishes.