XYZ Racing Hollow Rear Brake Kit — Audi A4 B8 QUATTRO (TYPE I) (2011-2015)

The 2011-2015 B8 A4 quattro carries its longitudinal engine ahead of the front axle, and the facelift car’s crown-gear centre differential defaults to a rearward torque split. That combination works the rear axle harder than most owners expect under braking, yet the standard rear discs were never sized for repeated heavy stops. The XYZ Racing Hollow Rear Brake Kit puts real thermal capacity at the back of the car.

This is a rear-axle upgrade built to match an uprated front setup, or to rebalance a B8 that runs short of rear bite on circuit. With three pad compounds and a choice of caliper finishes, it suits a fast-road A4 as readily as one that sees regular track time.

What this big brake kit does for your 2011-2015 Audi A4 B8 Quattro (Type I)

A larger rear disc gives the back axle the thermal headroom the factory setup lacks, so the pedal stays firm after a run of hard stops instead of going long. The two-piece floating disc trims rotating and unsprung mass at each rear corner, which helps the car settle over mid-corner bumps. Pairing the Racing compound with the bigger swept area lets the rear contribute its proper share of stopping force, calming the nose-heavy B8’s habit of pushing wide as you trail the brake into a turn. On a road car, the Street pad keeps cold bite and lower dust, while the Sport pad lifts the fade ceiling for harder use. Caliper colour is your call across the included painted finishes, with premium polished and candy options also available.

About the Hollow Rear Brake Kit

XYZ Racing builds this as a rear-axle big brake kit, pairing an uprated caliper with a larger two-piece floating disc. The disc sheds weight against a solid equivalent without surrendering the swept area that does the thermal work, so you add capacity without piling on rotating mass. The caliper is hollow-bodied as standard to keep weight down, with an optional Hollow Racing build for circuit use that removes the dust cover, is rated to 1000C and carries a two-year warranty. Three pad compounds span the use cases: a Street pad for quiet, low-dust road driving, a Sport compound for harder use with better heat tolerance, and a full Racing pad for circuit days. 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. Because this is a rear-specific kit, a matched pair of rear calipers and discs with braided lines, it is designed to complement a front upgrade and restore front-to-rear balance rather than to work alone.

Fitment for the Audi A4 B8 Quattro (Type I) (2011-2015)

This kit is mapped to the quattro B8 A4 in its Type I designation, covering the 2011 to 2015 model years. It addresses the rear axle only. Confirm your build year sits inside that span before ordering.

What buyers also search for

• Audi A4 B8 quattro rear brake upgrade for road and track use
• B8 A4 rear big brake kit to balance an uprated front setup
• Audi A4 B8 quattro Racing pad option for repeat track-day stops
• A4 B8 two-piece floating disc rear brakes to cut unsprung weight at the back axle
• Audi A4 B8 rear brake kit with selectable caliper colour choices

Pick your disc style, pad compound and caliper finish from the options above to build yours.