XYZ Racing Hollow Rear Brake Kit — Bmw 3 SERIES E 90 323 (OE185) (2006-2011)

On the E90 323, the rear axle does less of the braking work than the front, and that split is precisely why a tired or undersized rear setup quietly caps how hard you can commit into a corner. The XYZ Racing Hollow Rear Brake Kit gives the back of this rear-drive saloon a stiffer, more heat-stable clamp, so the tail stays composed when you trail the brakes towards an apex instead of running wide.

This is a rear-specific kit for the 2006-2011 3 Series E 90 323, supplied as a left-and-right pair and built to balance a front upgrade rather than disguise a soft pedal. The two-piece floating disc trims rotational mass out at the wheel, and the Street, Sport and Racing pad compounds let you match rear bias to how the car is actually driven.

What this brake kit does for your 2006-2011 Bmw 3 Series E 90 323 (OE185)

The first thing you feel is a firmer, more progressive rear bite, which makes the E90 easier to rotate under braking and less prone to the lazy, nose-led understeer these saloons carry from the factory. Swapping to the Racing compound holds pedal feel together through repeated stops on a track day, where a standard rear disc starts to glaze and go long. The Sport compound suits harder fast-road driving and the odd lap, while the Street compound keeps things quieter and lower on dust for daily use. Because the kit is rear-only, you can tune front-to-rear balance deliberately rather than over-braking one end. Caliper colours from Red and Yellow through Gold to Anodized Black, or a Custom Color, let the hardware look the part behind an open wheel.

About the Hollow Rear Brake Kit

The Hollow Rear Brake Kit is XYZ Racing’s rear-axle braking package for the E90, pairing a fixed caliper with a two-piece floating disc whose hollow-vane rotor cuts rotational weight without giving up swept area. Removing material from the disc lowers the mass the hub has to spin up and slow down, which sharpens response and eases the load on the rear bearings and dampers. Three pad compounds come with the kit: Street for quiet, low-dust road use, Sport for harder fast-road driving, and Racing for sustained circuit heat. Disc faces can be drilled or slotted at the same price. Caliper finishes run from the included Red, Yellow, Gold, Black and Anodized Black through to a Custom Color in any Pantone and premium polished-forged or candy options, so the hardware can be ordered to suit the car’s existing scheme, and a Hollow Racing upgrade is on hand for committed track use. It is built as a rear companion to a front big brake setup, completing the upgrade rather than working alone.

Fitment for the Bmw 3 Series E 90 323 (OE185) (2006-2011)

This kit is cut specifically for the Bmw 3 Series E 90 323, OE185 reference, across the 2006 to 2011 production span. It mounts at the rear axle only, as a left-and-right pair. Confirm your exact build year before ordering so the caliper and disc match your car.

What buyers also search for

• Bmw 3 Series E 90 323 rear brake upgrade for road and occasional track use
• E90 323 hollow disc brake kit to reduce rear rotational mass
• 3 Series E 90 rear big brake kit with Racing pad compound for repeat stops
• BMW E90 rear caliper colour options including Red, Yellow and Anodized Black
• 2006-2011 323 rear brake kit to balance a front big brake upgrade

Pick your pad compound and caliper colour and build your rear setup using the options above.