
XYZ Racing Hollow Rear Brake Kit — Bmw 3 SERIES E 91 325 (OE160) (2006-2011)
SKU: XYZ-BRK-BKR-BM-046-REAR
- IncludesRear axle pair (2 discs + 2 calipers)
- PositionRear
- Disc Ø330–421 mm
- Caliper pots6 / 8-pot
- Lead time10–15 working days
Fits Bmw 3 SERIES E 91 325 (OE160) (2006-2011)
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Caliper render for this kit:

The E91 carries more mass over its rear axle than any other E9x body, and that weight goes to work the moment you load the boot or hang an estate’s worth of kit behind the rear wheels. This XYZ Racing rear brake kit for the Bmw 3 Series E91 325 (2006-2011) addresses the back end specifically, where the standard 325 Touring setup runs out of consistency first under repeated heavy stops.
Sized to the OE160 hat dimension so it bolts to the factory rear hub geometry, the kit pairs a pair of two-piece floating discs with a pair of fixed calipers to give the rear axle the thermal headroom the N52-powered Touring never had as standard. It is a targeted rear upgrade, not a styling part. The gains show up in pedal feel and stability, not just behind the spokes.
What this brake kit does for your 2006-2011 Bmw 3 Series E 91 325 (OE160)
The lightweight disc design moves heat away from the friction face faster than a solid OE rotor, so the rear axle holds bite through a run of motorway-speed stops or a string of corner entries instead of going long and wooden. On a rear-biased estate that matters: a stable, predictable rear under trail braking keeps the E91 settled rather than nervous as you load the front. The fixed caliper clamps more evenly than the sliding OE unit, which sharpens initial pedal response and cuts the vague travel owners notice once the standard pads start to glaze. Pick the pad compound to suit the use: Street for ordinary road duty with low dust and noise, Sport for spirited fast-road work, and Racing when the car sees track time and needs a higher fade threshold. The result is a rear end that does its share of the work under hard braking instead of leaving everything to the front.
About the rear brake kit
The discs are two-piece floating units with a hollow-vane internal structure: the cavities and cooling vanes shed mass and pull temperature out of the rotor far quicker than a conventional casting, which is what keeps performance steady when the brakes are worked hard. The floating ring expands on its alloy bell rather than fighting a fixed hat, so the disc stays flat and resists warping. Built as a rear-axle kit around the OE160 specification, disc diameter and hat offset match the 325’s factory rear mounting points. A multi-piston fixed caliper replaces the floating OE caliper for more uniform pad loading and a firmer pedal. Three pad compounds are offered, Street, Sport and Racing, so the same hardware suits a daily-driven Touring or a weekend track car. Caliper finishes run from painted Red, Yellow, Gold, Black and Anodized Black at no extra cost through to premium polished-forged and candy options and a Custom Pantone colour. Disc faces are available drilled or slotted at the same price, with two-tone or titanium centre-bell upgrades selectable too.
Fitment for the Bmw 3 SERIES E 91 325 (OE160) (2006-2011)
This kit fits the Bmw 3 Series E91 325 (OE160) built from 2006 to 2011 and mounts to the rear axle. It is specified to the OE160 hat dimension to suit the factory rear hub. Confirm your chassis code and build year against the year span above before ordering, and choose your pad compound, disc style and caliper colour from the options when you order.
What buyers also search for
- Bmw 3 Series E91 325 rear big brake kit for road and occasional track use
- E91 Touring rear brake upgrade that resists fade on repeated heavy stops
- BMW 325 rear brake kit with Racing pad compound option for track days
- Lightweight rear disc upgrade for the 2006-2011 E91 with custom caliper colours
- E91 325 fixed-caliper rear brake conversion for a firmer pedal
Choose your pad compound, disc style and caliper colour from the options above, then order your rear brake kit.
What’s in the kit
Rear axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 330–421 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: 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.

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 Bmw 3 SERIES E 91 325 (OE160) appear here as the rest of the range publishes.