XYZ Racing Hollow Rear Brake Kit — Subaru IMPREZA WRX AWD (EPB) (2020-2026)

Rear braking is the quiet half of the story on a Subaru WRX. The symmetrical AWD layout keeps every tyre loaded when you are hard on the throttle, so the rear axle carries more of the stopping work than the WRX’s front-biased reputation lets on. On the EPB cars built from 2020 onward, the integrated electronic parking brake also makes the standard rear caliper one of the most awkward components on the whole car to upgrade.

The XYZ Racing Hollow Rear Brake Kit is built around exactly that problem. It is a rear big brake kit for the 2020-2026 Subaru Impreza WRX AWD (EPB), a matched pair of left and right corners, that adds larger two-piece floating rotors and a replacement caliper while keeping the electronic parking brake working as Subaru intended. For fast-road and circuit drivers who have already sorted the front end and found the rear falling behind, it brings the back axle back into the conversation.

What this big brake kit does for your 2020-2026 Subaru Impreza WRX

Fit the larger rotors and the first thing you notice is a firmer, more repeatable pedal once temperatures climb. The extra disc diameter adds thermal mass, so the rear brakes resist the heat that makes a standard WRX rear end go soft after a few hard stops. The two-piece floating disc trims rotating and unsprung mass at each rear corner and lets the friction ring expand freely, which sharpens turn-in response and helps the discs shed heat between applications. Three pad compounds, Street, Sport and Racing, let you set rear bite to match how the car is used, from a daily commute through fast road to a full track day. The result is a rear axle that stays in step with an upgraded front instead of overheating and unloading mid-session.

About the Hollow rear brake kit

The kit pairs a two-piece floating disc, which lets the friction ring expand against an alloy bell to manage heat without giving up swept area, with a hollow-cast caliper as standard. That matters most at the rear of an AWD car, where every kilo saved at the hub is unsprung mass the dampers no longer have to manage. The replacement caliper is engineered to clamp the larger disc while retaining the factory electronic parking brake function, the detail that rules out most rear upgrades on the post-2020 WRX. Calipers are painted Red, Yellow, Gold, Black or Anodized Black at no extra cost, with a Custom Color in any Pantone for £150 plus premium polished-forged Titanium, Polished Gold and Polished Silver and candy Teal, Blue, Red and Orange finishes, so the kit can sit discreetly behind the wheels or stand out through them. Disc faces are drilled or slotted at the same price, the centre bell upgrades to a five-colour anodized two-tone or titanium at checkout, and a Hollow Racing caliper rated to 1000C with a two-year warranty is offered for serious track use. Pad material is specified separately, with Street, Sport and Racing compounds spanning road use through to circuit work. It is sold as a rear-specific kit, designed to partner a front upgrade rather than work on its own.

Fitment for the Subaru Impreza WRX AWD (EPB) (2020-2026)

This kit is cut for the Subaru Impreza WRX AWD in EPB specification, covering the 2020 to 2026 model years. The EPB designation is the key fitment check: it confirms your car uses Subaru’s electronic parking brake at the rear, which this caliper is built to accommodate. Confirm your WRX runs the electronic handbrake rather than a mechanical cable before ordering.

What buyers also search for

• Subaru WRX rear brake upgrade that keeps the electronic parking brake working
• 2020-2026 Subaru Impreza WRX big brake kit for fast-road and track-day use
• WRX AWD rear rotor and caliper options with Street, Sport or Racing pad compounds
• Subaru Impreza WRX rear brake kit with painted, polished and candy caliper finishes

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