XYZ Racing Hollow Rear Brake Kit — Toyota SIENNA IV (XL40) (2020-2026)

The fourth-generation Sienna carries serious mass: a hybrid MPV that tips well past two tonnes with a full complement of passengers and cargo, and almost all of that weight sits over the nose. On the standard setup the rear axle does comparatively little, which is exactly why it fades first when you ask the van to stop hard from motorway speed or hold pace down a long descent with a trailer behind it.

The XYZ Racing Hollow Rear Brake Kit for the Toyota Sienna IV (XL40) addresses that imbalance directly. Supplied as a left-and-right rear pair, it puts a larger, better-cooled two-piece floating disc and a stiffer caliper on the back axle so the rear contributes more of the total braking effort, steadies the van under load, and shrugs off the heat that kills pedal feel on the factory rears.

What this brake kit does for your 2020-2026 Toyota Sienna IV (XL40)

The first thing you notice is a firmer, more progressive pedal that does not go long after a sequence of hard stops. Because the kit shifts braking effort rearward, the front discs run cooler and the whole van settles more evenly under heavy braking instead of diving and pushing on its nose. The two-piece floating disc design sheds heat faster and trims rotating mass at the rear, which sharpens response and helps the brakes recover between stops. With three pad compounds, Street, Sport and Racing, you can match the rear axle to how the Sienna is actually driven, from school-run commuting to fully laden long-haul work. For owners who tow or carry heavy loads regularly, the gain in fade resistance is the benefit felt most.

About the Hollow Rear Brake Kit

XYZ Racing builds this as a rear-specific upgrade rather than a one-size adapter. It runs a hollow-body caliper as standard, cast with internal voids that drop weight at the corner while keeping the housing rigid. The disc is a two-piece floating, vented rotor, internally ducted so air is drawn through and expelled at the edge, pulling heat away from the friction surface faster than a solid single-skin disc can manage. The multi-piston caliper clamps that disc with more even pad pressure than the sliding factory unit, which is what gives the firmer, more consistent pedal. Three friction-material options cover the spread of use: a Street compound for quiet daily running, a Sport compound with more bite and higher temperature tolerance, and a Racing compound for the hardest, hottest work. Discs come drilled or slotted at the same price, with two-tone anodized or titanium centre bells, and a Hollow Racing caliper rated to 1000C for the hardest duty. Painted calipers are finished in your choice of Red, Yellow, Gold, Black or Anodized Black at no extra cost, with a Custom Color in any Pantone and premium polished-forged and candy finishes, so the kit can sit discreetly behind the wheels or stand out as a visible statement of intent.

Fitment for the Toyota Sienna IV (XL40) (2020-2026)

This kit is cut for the XL40-generation Toyota Sienna built from 2020 to 2026, and fits the rear axle specifically as a left-and-right pair. It is designed around the factory rear hub and mounting points for that chassis, so confirm your van is the fourth-generation XL40 before ordering. Front and rear kits are sold separately; this is the rear-axle set.

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Choose your pad compound and caliper colour using the options above, then add your Sienna XL40 rear kit to the order.