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Big Brake Kit

XYZ Racing Hollow Rear Brake Kit — Bmw 3 SERIES E 91 4WD (OE185) (2006-2012)

SKU: XYZ-BRK-BKR-BM-46-C-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 4WD (OE185) (2006-2012)

Brake pad compound

Street: quiet, low-dust, strong cold bite for road driving. Sport: higher temperature range and more bite for fast road and occasional track. Racing: maximum fade resistance for sustained track use (noisier and dustier cold). Match the pad to how hard you actually brake.

Disc size

Caliper grade

Hollow is the standard caliper: a lighter hollow-body forged caliper with a dust cover and a 5-year warranty. Hollow Racing drops the dust cover for sustained high-temperature use (rated to 1000°C, 2-year warranty) — the track-grade choice.

Caliper colour

Painted colours are included. Polished-forged finishes are mirror-polished forged calipers (Titanium, Gold, Silver); candy colours are a deep, mirror-reflection paint. Both are premium upgrades — fuller detail further down the page.

Painted — includedTell us the exact Pantone (PMS) code you want the calipers painted.Polished forgedCandy
Disc style

Drilled discs (cross-drilled holes) vent gas and water and look aggressive; slotted discs (surface grooves) wipe the pad face clean and resist fade under sustained hard use. Same price — choose on looks or how you drive.

Centre bell

The centre bell is the CNC-machined aluminium hat that joins the disc to the hub. Standard anodized is included; a two-tone bell adds an anodized accent ring in your choice of colour; titanium is the lightest, forged option.

Carbon-ceramic rotor

Carbon-ceramic rotors are a special-order track upgrade: far lighter than steel, fade-resistant at extreme temperatures and extremely long-lived. The price follows the disc size you choose above. The standard two-piece steel rotor is included.

Configured price£2,200.00Inc. VAT

Lead time: 10–15 working days from payment


£2,200.00

Made to order. Full payment is taken at checkout. Production begins once payment is confirmed.

Pay by card, Apple Pay, Google Pay — or Klarna on eligible orders.

Caliper render for this kit:

XYZ Racing Hollow Rear Brake Kit — Bmw 3 SERIES E 91 4WD (OE185) (2006-2012) — 330 mm
330 mm

The E91 Touring carries weight the saloon never has to: a loaded boot, the xDrive driveline, and the rear axle’s share of all of it. That mass lands on the rear brakes every time you scrub speed from motorway pace, and the factory OE185 setup was specified for ordinary family use, not repeated hard stops. The XYZ Racing rear brake kit for the Bmw 3 Series E 91 4WD (OE185) replaces that rear corner with a pair of two-piece floating discs and a pair of calipers built to shed heat faster and hold a firmer pedal.

This is the rear half of a brake upgrade aimed at owners who actually use the load space the Touring was bought for, then drive the car hard anyway. Pad compound runs from Street through Sport to Racing, so the same rear kit suits a daily estate or a 4WD E91 that sees the occasional circuit session.

What this brake kit does for your 2006-2012 Bmw 3 SERIES E 91 4WD (OE185)

After fitting, the difference shows up first under repeated braking, the kind the Touring’s extra rear weight punishes. The lightweight rear discs run cooler, so the pedal stays firm where the standard OE185 brakes would start to go long. Pick the Racing compound and you get bite that holds up to back-to-back stops on a track day; choose Street or Sport and you keep quiet, low-dust braking for the daily commute or fast-road work. Because the upgrade is rear-specific, it also helps the car settle under trail braking rather than nodding onto its nose, which is exactly the balance a heavy xDrive estate tends to lack.

About the rear brake kit

The two-piece floating discs vent heat through the friction face and trim rotating mass at the same time, with the floating ring expanding on its alloy bell to stay flat under load. The hollow-vane casting helps pull heat out of the rear discs between stops, which on a car as nose-and-tail heavy as a 4WD E91 is what keeps the pedal consistent. The kit is offered with three pad compounds: a Street compound for quiet, low-dust road use, a Sport compound for harder fast-road driving, and a Racing compound for circuit work. The caliper is hollow-cast as standard, with a Hollow Racing upgrade for serious track use. Caliper finishes cover painted Red, Yellow, Gold, Black and Anodized Black at no extra cost, with premium polished-forged, candy and Custom Pantone options, and the disc face is selectable drilled or slotted with two-tone or titanium centre bells. Everything bolts to the OE185 rear specification, replacing the factory disc and caliper rather than clamping over it.

Fitment for the Bmw 3 SERIES E 91 4WD (OE185) (2006-2012)

This kit is cut for the E91 chassis, the Touring bodyshell of the 2006-2012 3 Series, in its 4WD xDrive form, using the OE185 rear brake specification. It fits the rear axle only. Confirm your car is the OE185-spec 4WD E91 before configuring, as the saloon and rear-drive variants use different rear hardware.

What buyers also search for

  • Bmw 3 Series E 91 rear brake upgrade for a heavy xDrive Touring
  • OE185 rear big brake kit with Street, Sport and Racing pad options
  • E91 4WD rear discs that resist fade on repeat motorway and track stops
  • Bmw 3 Series brake kit with painted Red, Yellow, Gold and Black caliper finishes
  • E91 xDrive lightweight hollow-vane rear discs to cut unsprung mass

Choose your pad compound, disc style and caliper colour from the options above when you order your E91 rear 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.

Hollow Racing caliper

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).

Polished forged caliper finishes
Candy caliper colours

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.

Two-tone anodized centre bells
Same car

Other products that fit this vehicle

Front & rear brake kits, coilovers and more for this car

  • More XYZ products for the Bmw 3 SERIES E 91 4WD (OE185) appear here as the rest of the range publishes.