
XYZ Racing Hollow Rear Brake Kit — Bmw 3 SERIES E 46 320 (1998-2006)
SKU: XYZ-BRK-BKR-BM-008-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 46 320 (1998-2006)
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Caliper render for this kit:

Standard rear discs on the E46 320 were sized for a saloon built to cruise, not to brake hard into a chicane through a full track session. The XYZ Racing Hollow Rear Brake Kit for the BMW 3 Series E46 320 rebuilds the back axle’s stopping hardware around heat management and weight, so the rear keeps biting when the factory setup has gone soft and long.
This is a rear-only kit, supplied as a left-and-right pair, so it pairs with a matched front upgrade or sharpens a car whose front brakes already cope. On the E46’s multi-link rear, shedding rotating mass at the hub also eases load on tired rear subframe mounts and helps the chassis settle under braking instead of going light at the back.
What this brake kit does for your 1998-2006 BMW 3 Series E 46 320
The two-piece floating disc and its hollow-vane rotor strip rotating and unsprung weight from each rear corner, which the 320’s comparatively light back end feels as quicker response and less wheel hop over kerbs and broken tarmac. Move to the Racing pad compound and the rear holds a firmer, more progressive bite deep into heavy stops, keeping the car balanced rather than nervous on turn-in. The Street compound stays quiet, clean and low on dust for daily driving while resisting the fade that flattens standard pads on a quick B-road, and the Sport compound covers harder road and the odd track lap. The result is a longer, more predictable rear brake before heat becomes the limit.
About the Hollow Rear Brake Kit
The Hollow Rear Brake Kit centres on a two-piece floating disc whose hollow-vane rotor removes material to cut rotational mass without surrendering the thermal capacity a rear disc needs under repeated hard use. It is built specifically for the rear axle and supplied as a pair, matching the E46 320’s hub and mounting geometry rather than forcing a universal bracket onto the car. Three pad compounds cover the full spread of use: Street for quiet, low-dust road manners, Sport for harder fast-road and occasional-track work, and Racing for sustained circuit abuse. Disc faces can be drilled or slotted at the same price. The calipers ship painted in Red, Yellow, Gold, Black or Anodized Black at no extra cost, with a Custom Color in any Pantone and premium polished-forged or candy finishes, plus a Hollow Racing upgrade for serious track use, so the hardware visible behind an open wheel can be matched to the car.
Fitment for the BMW 3 Series E46 320 (1998-2006)
This kit is cut for the BMW 3 Series E46 320 across the full 1998 to 2006 production run, mounting as a left-and-right pair. It fits the rear axle only and is specified against the 320’s standard hub and caliper mounting, so confirm your car is an E46 320 variant before ordering. Caliper colour and pad compound are chosen when you order.
What buyers also search for
- BMW 3 Series E46 320 rear brake upgrade for road and occasional track use
- E46 320 rear big brake kit with Street, Sport or Racing pad compounds
- Lightweight hollow rear discs to cut unsprung weight on the E46 320
- Coloured brake calipers for the BMW 3 Series E46 320 in five included finishes
- Rear-axle braking upgrade for the 1998-2006 BMW 3 Series E46
Choose your pad compound and caliper colour for the E46 320 and build your rear kit using the options above.
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.

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