XYZ Racing Hollow Rear Brake Kit — Ktm X-BOW GT-XR (2023-2026)

The X-BOW GT-XR carries its Audi-sourced five-cylinder behind the cabin, so the rear axle does more braking work than the silhouette suggests. This XYZ Racing rear big brake kit is built for that load: a pair of two-piece floating discs and multi-piston calipers sized to keep the back of a sub-1,200kg carbon-tub car composed when you stand on the pedal from three-figure speeds.

For a mid-engined machine like the GT-XR, rear brake stability is what lets the front do its job. The kit pairs three pad compound choices, Street, Sport and Racing, with calipers you can specify in a range of finishes, so the hardware matches how hard you actually drive the car.

What this brake kit does for your 2023-2026 Ktm X-BOW GT-XR

Fit it and the first thing you notice is pedal consistency. The hollow-vane discs trim rotating and unsprung mass at the rear axle, which sharpens how quickly the GT-XR settles after a stop and reduces the inertia the dampers have to manage over kerbs. The Racing pad compound gives you bite and fade resistance for repeat heavy braking on circuit, the Sport compound covers harder fast-road work, while the Street compound keeps things low-noise and low-dust for road miles. Because the kit is rear-specific, you balance it against your front setup rather than over-braking one end. On a car this light, that means braking you can commit to deep into a corner without the rear getting nervous as you trail off the pedal.

About the Hollow rear brake kit

The kit is a pair of two-piece floating discs that strip weight from where it costs most, at the rear corners and out near the radius of the wheel. Less rotating mass means the brakes spin up and slow down with the wheel more readily, and the unsprung saving helps the damper keep the contact patch planted. The calipers are multi-piston items matched to the GT-XR’s rear hub, clamping the disc with whichever pad compound you choose, and the caliper is a hollow-body unit as standard with an optional Hollow Racing upgrade for the hardest circuit use that drops the dust cover, is rated to 1000C and carries a two-year warranty. Three compounds cover the spread: Street for quiet, clean road driving, Sport for harder fast-road use, and Racing for circuit sessions where heat and fade are the enemy. Calipers are painted at no extra cost in Red, Yellow, Gold, Black or Anodized Black, with a Custom Color in any Pantone for £150 and premium polished-forged (Titanium, Polished Gold, Polished Silver) or candy (Candy Teal, Candy Blue, Candy Red, Candy Orange) finishes, so the kit reads as deliberate behind an open wheel. Discs come drilled or slotted at the same price, with two-tone anodized or titanium centre bells selectable at checkout.

Fitment for the Ktm X-BOW GT-XR (2023-2026)

This kit is sized specifically for the rear axle of the KTM X-BOW GT-XR built from 2023 to 2026, as a pair of calipers and discs. It suits the closed-cockpit GT-XR chassis and mounts to the factory rear hub. Confirm your build year, then pair it with your chosen pad compound and caliper colour before adding to cart.

What buyers also search for

• KTM X-BOW GT-XR rear brake upgrade for track days and fast-road use
• Big brake kit for the mid-engined GT-XR with three pad compound options
• Lightweight two-piece floating brake discs to cut unsprung mass at the rear axle
• KTM X-BOW GT-XR caliper colour options including Red, Yellow, Gold and Anodized Black
• Rear-specific brake kit to balance against your existing front brake setup

Choose your pad compound and caliper finish for the GT-XR and set yours up using the options above when you order.