XYZ Racing Hollow Rear Brake Kit — Subaru IMPREZA GRB (WRX) φ 286/ φ 191 (2007-2013)

Third-generation Impreza owners already know where the GRB’s weakness lies under braking: the rear axle does less of the work than the car’s turbocharged, nose-led AWD layout actually demands once you start braking deep into a corner. This XYZ Racing Hollow Rear Brake Kit for the Subaru Impreza GRB (WRX), built around a 286mm two-piece floating rotor, hands the back of the car the stopping authority the standard setup never quite gave it.

It is a rear-axle upgrade for owners who use a 2007-2013 GRB hard on fast road and circuit, where repeated heavy stops expose the limits of the factory rear brakes. Supplied as a matched pair of left and right rear corners, the floating disc construction strips rotational and unsprung mass off each corner, sharpening pedal response without rewriting the chassis’s familiar manners.

What this brake kit does for your 2007-2013 Subaru Impreza GRB (WRX)

On a flat-four, AWD car that carries its mass forward, the gain you feel first is a rear axle that finally pulls its weight. More consistent rear braking torque steadies the GRB under trail-braking, helping the nose tuck rather than wash wide into an apex. The two-piece floating rotor lowers thermal distortion where it matters and resists the fade that creeps in over a session, while the lighter assembly improves how quickly the brakes respond to inputs. Three pad compounds, Street, Sport and Racing, let you match bite and temperature window to how the car is actually used, from quiet daily commuting through fast road to back-to-back lapping. The result is a firmer, more confident pedal and a car that rotates with intent instead of leaning on its front end.

About the Hollow Rear Brake Kit

The kit replaces the rear discs and calipers as a matched pair, sized to the φ286 friction ring and the φ191 bell diameter quoted in the part name. Two-piece floating construction is the defining feature: letting the disc float against its alloy bell reduces thermal distortion and rotating mass, which improves both ride compliance and how quickly the brakes respond, while the vented design keeps temperatures in check during hard use. Calipers clamp pads available in Street, Sport and Racing specifications, so the same hardware suits a road car or a track build depending on the compound fitted. The hollow-cast caliper is 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, letting the kit sit behind open-spoke wheels as a visual statement as much as a performance one. Disc faces are drilled or slotted at the same price, the centre bell upgrades to anodized two-tone or titanium at checkout, and a Hollow Racing caliper rated to 1000C with a two-year warranty is available for dedicated track use. It is engineered as a rear-axle complement to a front upgrade, restoring brake balance on a platform that runs front-heavy from the factory.

Fitment for the Subaru Impreza GRB (WRX) (2007-2013)

This kit is specified for the GRB-chassis Subaru Impreza WRX across the 2007-2013 production span, using the φ286/φ191 rear dimensions listed for this fitment. Confirm your chassis code and model year against the figures above before ordering, as rear brake sizing varies across the third-generation Impreza range.

What buyers also search for

• Subaru Impreza GRB rear big brake upgrade for road and track use
• WRX 286mm two-piece floating rear disc conversion
• Subaru Impreza GRB brake kit with Street, Sport and Racing pad options
• Rear brake balance upgrade for the 2007-2013 turbocharged AWD Impreza
• WRX caliper colour options including Red, Gold, Anodized Black and a Custom Pantone

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