XYZ Racing Hollow Rear Brake Kit — Bmw I8 (2014-2026)

The BMW i8 splits its braking duties in an unusual way: regenerative braking handles much of the front-axle slowing, while the combustion-driven rear axle leans harder on its friction brakes than the car’s grand-touring manners let on. Push an i8 through a sequence of fast B-road bends or a few warm laps and it is the rear discs that load up first. The XYZ Racing Hollow Rear Brake Kit answers that, adding thermal headroom exactly where this hybrid coupe tends to run short.

Built around a hollow-vane disc to keep unsprung and rotating mass down, the kit suits a car whose identity is built on the carbon-fibre LifeDrive tub and a genuinely light kerb weight. It is a rear upgrade aimed at owners who use the i8’s performance rather than just its efficiency, and who want the pedal to stay firm when the petrol triple is doing the work.

What this brake kit does for your 2014-2026 BMW I8

After fitting, the first thing you notice on the i8 is consistency. The hollow-vane discs shed heat faster and carry less rotating mass, and their two-piece floating construction lets them expand under heat without warping, so the rear axle resists the fade that creeps in once the regenerative system has given all it can and the friction brakes take over. With three pad compounds, Street, Sport and Racing, you can match the rear bite to how you actually drive, from town-and-motorway refinement to repeated hard stops on a circuit. The lighter rotating assembly also sharpens how quickly the rear wheels respond to pedal pressure, which helps the i8 settle under trail braking into a corner rather than running wide on its low-rolling-resistance rubber. Braking confidence stops being the thing that limits a quick drive.

About the Hollow rear brake kit

The Hollow rear brake kit takes its name from its disc design: two-piece discs with hollowed internal vanes that cut weight without losing swept area, reducing both unsprung mass at the rear and the gyroscopic load the suspension has to manage. It ships as a matched left-and-right pair with braided lines and brackets sized to the i8’s rear hub. The pad range spans three compounds, Street for quiet, low-dust everyday road use, Sport for fast-road and occasional track work with a wider heat range, and Racing for sustained high-temperature circuit sessions, so the same hardware covers very different briefs. The caliper is a hollow-body unit as standard, with an optional Hollow Racing version rated to 1000C and a two-year warranty for hard circuit use. Included painted finishes are Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone and premium polished-forged and candy options above that to match the i8’s bodywork. Discs come drilled or slotted at the same price, and two-tone anodized or titanium centre bells are selectable. The emphasis is on giving the rear axle the thermal capacity and pedal consistency that the standard hybrid setup, tuned heavily around regeneration and efficiency, was never really built to deliver under repeated hard use.

Fitment for the BMW I8 (2014-2026)

This kit is built for the BMW i8 across the full 2014 to 2026 production run, covering both the original coupe and the later updated cars. It is a rear-axle fitment specifically. Confirm your exact model year before ordering so the correct disc and caliper sizing is matched to your car.

What buyers also search for

• BMW i8 rear brake upgrade for owners who track or push their hybrid coupe
• BMW i8 brake kit with Street, Sport or Racing pad compounds to suit road or circuit use
• Hollow-vane rear discs that cut unsprung weight on the carbon-fibre i8
• BMW i8 caliper colour options including red, yellow, gold, black and custom
• Rear big brake kit fade resistance for the i8’s combustion-driven rear axle

Choose your pad compound and caliper colour and confirm your year using the options above to configure your i8 rear brake kit.