XYZ Racing Hollow Rear Brake Kit — Bmw 1 SERIES E 87 123 (OE185) (2004-2011)

The rear-drive E87 123 carries its braking load differently to the front-wheel-drive hatchbacks it shared a showroom with, and the rear axle does real work under trail-braking into a corner. This XYZ Racing rear brake kit replaces the OE185 setup with a two-piece floating disc and a forged caliper sized to keep that rear axle composed when the 123’s torque is fed back through the driveline on corner exit.

Fitted to the 2004-2011 BMW 1 Series E87 123, the kit targets the rear-bias instability that owners feel under repeated heavy stops: a soft, lengthening pedal and a rear end that starts to step as the standard discs heat-soak. The two-piece floating disc sheds heat faster than a solid OE rotor, and the rebuilt rear clamping force gives you a brake balance you can actually lean on.

What this brake kit does for your 2004-2011 Bmw 1 Series E87 123

On the road you notice a firmer, more linear pedal first, with the rear axle biting progressively rather than grabbing late. On track, the hollow-vane rear disc resists the fade that turns a confident E87 123 into a nervous one after three or four hard laps. Because the rear brakes settle the chassis under braking, turn-in feels sharper and the car rotates more predictably on the way into a corner. With three pad compounds available, Street, Sport and Racing, you choose the rear bite that matches how you actually drive the 1 Series, from daily commuting to weekend circuit sessions. The result is a rear end you can trust deep into the braking zone instead of one you brake around.

About the Rear Brake Kit

The rear kit is supplied as a matched pair of left and right rear calipers and discs, pairing a two-piece floating, hollow-vane rotor with a forged multi-piston caliper that replaces the sliding OE arrangement on the OE185 rear corner. The hollow-vane structure increases airflow through the disc while shaving rotating mass, which helps the rear discs run cooler under sustained use and recover quicker between stops. Discs are offered drilled or slotted at the same price, with braided lines included. The caliper is hollow-body as standard, and an optional Hollow Racing upgrade (no dust cover, 1000C rated, two-year warranty) is there for circuit-focused use. Pad choice spans three compounds, Street for road use, Sport for fast-road and occasional track work, and Racing for circuit sessions where outright bite and high-temperature stability matter more than cold-pedal feel. Included painted caliper finishes are Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone for a small upcharge, plus premium polished-forged (Titanium, Polished Gold, Polished Silver) and candy (Candy Teal, Candy Blue, Candy Red, Candy Orange) finishes. Two-tone centre bells in five anodized colours, or titanium, are selectable at checkout. Every component is matched to the rear axle geometry of this specific chassis rather than adapted from a generic part.

Fitment for the BMW 1 Series E87 123 (2004-2011)

This kit is built for the rear axle of the E87 123, covering the 2004-2011 production span and referencing the OE185 rear brake specification. Confirm your exact build year and rear disc reference against your chassis before ordering, and select your pad compound and caliper colour when you order.

What buyers also search for

• BMW 1 Series E87 123 rear big brake kit for road and track use
• E87 123 two-piece floating disc brake upgrade to cut rear brake fade on circuit
• BMW 1 Series rear brake kit with Street, Sport and Racing pad options
• E87 123 rear caliper upgrade in Red, Yellow, Gold, Black or custom Pantone
• 2004-2011 BMW 1 Series rear brake balance upgrade over the OE185 setup

Pick your pad compound and caliper colour and configure your E87 123 rear kit from the options above.