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Big Brake Kit

XYZ Racing Hollow Rear Brake Kit — Bmw 3 SERIES E 91 325 (OE185) (2006-2011)

SKU: XYZ-BRK-BKR-BM-46-A-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 (OE185) (2006-2011)

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 91 325 (OE185) (2006-2011) — 330 mm
330 mm

The E91 Touring carries more mass over its rear axle than the E90 saloon it shares a platform with, and that load only grows once the boot is packed. The XYZ Racing rear brake kit for the BMW 3 Series E91 325 (2006-2011) answers the consequence of that weight: a rear axle that heat-soaks and goes soft sooner than the chassis balance wants it to. It is a rear-only big brake kit, a pair of rear calipers and a pair of two-piece floating discs whose hollow-vane construction strips rotating and unsprung mass from each corner.

For a 325 Touring worked hard on a back road or a track day, the payoff is rear-end bite that stays put and a brake balance that holds its shape under repeated stops. The kit accepts Street, Sport or Racing pad compounds, so the same hardware suits a daily N52 estate or a car that sees regular circuit time.

What this brake kit does for your 2006-2011 BMW 3 Series E91 325

The lightweight disc construction takes weight out of the rotating assembly, which sharpens how quickly the rear brakes wake up and eases the load the unsprung mass puts on the rear dampers over broken surfaces. On the 325 Touring that means a rear axle that resists fade through a sequence of hard stops, keeping the pedal firm where a tired OE setup would have started to go long. The Racing compound lifts the temperature ceiling for circuit use, Sport bridges fast road and the odd track day, while Street keeps cold bite strong and dust low for everyday driving. With calipers offered in Red, Yellow, Gold, Black, Anodized Black or premium and custom finishes, the upgrade shows through the spokes as plainly as it works behind them.

About the rear brake kit

This is a direct-fit rear-axle package designed around two-piece floating discs whose hollow-vane internal structure cuts mass without giving up thermal capacity. Less rotating weight lets the assembly heat and shed temperature more evenly, which is what keeps performance steady once a single firm stop becomes a string of them. The floating ring expands on the alloy bell to stay flat under heat, and the disc face can be specified drilled or slotted at the same price, with a two-tone anodized or titanium centre bell as a checkout upgrade. The kit retains the E9x rear’s integrated parking-brake arrangement, so nothing about day-to-day usability is lost. Three pad compounds, Street, Sport and Racing, let you match friction material to how the car is genuinely used. Painted caliper colours, Red, Yellow, Gold, Black and Anodized Black, are included at no cost; premium polished-forged and candy finishes and a Custom Pantone option are available too. The caliper is hollow-cast as standard, with a Hollow Racing upgrade for serious track use.

Fitment for the BMW 3 Series E91 325 (OE185) (2006-2011)

This kit is specified for the BMW 3 Series E91 325 built between 2006 and 2011, using the OE185 rear brake reference for the platform. It fits the rear axle only and works with the factory handbrake setup. Confirm your build year falls within the 2006 to 2011 span before ordering.

What buyers also search for

  • BMW 3 Series E91 325 rear brake upgrade for road and track use
  • E91 Touring big brake kit that resists rear-axle fade on repeat stops
  • BMW 325 lightweight disc brakes with Street, Sport or Racing pad options
  • E91 rear brake kit with painted Red, Yellow, Gold and Black caliper choices
  • BMW 3 Series 2006-2011 rear setup that keeps the factory parking brake

Pick your pad compound, disc style and caliper colour from the options above, then order your E91 325 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.

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 91 325 (OE185) appear here as the rest of the range publishes.