XYZ Racing Hollow Rear Brake Kit — Bmw 1 SERIES E 81 123 (OE185) (2007-2012)

The E81’s rear-drive layout means the back axle does more than trail along behind the front; it carries braking load that a front-wheel-drive hatch never asks of its rear discs. On the 123d, with that twin-turbo 2.0 diesel sitting over the nose and 400Nm shoving the car down a straight, the standard rear setup is the first thing to fade when you start braking hard from three-figure speeds. This XYZ Racing rear brake kit for the Bmw 1 Series E 81 123 (OE185) puts a properly sized rear stopper back into the balance.

Built around two-piece floating discs to trim rotating and unsprung mass, the kit is aimed at owners who use the car’s rear-drive chassis the way BMW intended, with committed road driving and the occasional track session rather than just commuting. It restores rear bite without overwhelming the front axle.

What this rear big brake kit does for your 2007-2012 Bmw 1 Series E 81 123 (OE185)

After fitting, the first thing you feel is a firmer, more progressive pedal that holds its travel under repeat stops. The two-piece floating disc, with its hollow-vane construction, sheds heat and rotating weight, so the rear axle settles faster and the chassis stays composed when you brake into a corner rather than squatting and unloading the front. With three pad compounds to choose from, Street, Sport and Racing, you can match the rear bias to how the car is actually used, from quiet road manners to a pad that survives back-to-back laps. The result is a 123d that stops shorter, resists fade longer, and keeps the rear-drive balance you bought the car for.

About the Rear Brake Kit

The kit is supplied as a matched pair of left and right rear calipers and discs, centred on two-piece floating rotors that move heat away from the friction surface while cutting rotating mass at the rear corners. It bolts to the E81 rear axle as a matched disc-and-caliper package, with discs offered drilled or slotted at the same price and braided lines included. The forged caliper is hollow-body as standard, with an optional Hollow Racing upgrade (no dust cover, 1000C rated, two-year warranty) for harder track use. The three-stage pad menu, Street, Sport and Racing, lets you tune outright bite and temperature range without changing hardware. 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. Everything is specified for the rear position specifically, so the front-to-rear braking split stays sensible on a car that already runs most of its braking effort up front.

Fitment for the Bmw 1 Series E 81 123 (OE185) (2007-2012)

This kit is built for the Bmw 1 Series E 81 123 (OE185) chassis across the 2007 to 2012 model years, in the rear position. Confirm your exact OE185 disc reference against your current rear setup before ordering.

What buyers also search for

• Bmw 1 Series E 81 rear big brake kit for road and track use
• 123d rear brake upgrade with Racing pad compound for repeat braking
• E81 two-piece floating disc rear kit to reduce rotating mass at the back axle
• Coloured caliper options for the 1 Series rear brake conversion
• 2007-2012 1 Series rear stopping upgrade that keeps the brake balance sensible

Choose your pad compound and caliper colour, then configure your rear kit from the options above.