XYZ Racing Hollow Rear Brake Kit — Lexus GS 300 JZS161 (φ 190) (1998-2005)

The JZS161 was built to cover distance at speed in near silence, and on a rear-drive saloon nudging 1,600kg the back axle earns its keep the instant you start hauling that mass down from motorway pace. This XYZ Racing Hollow Rear Brake Kit for the Lexus GS 300 JZS161 targets the rear specifically: a lighter two-piece floating disc and a fixed-mount caliper that keep the back end contributing predictably while the fronts are doing the heavy lifting.

It is the rear half of a properly judged braking setup for a car that is so often tuned well beyond its 280PS origins. With a φ190 fitment matched to the JZS161 rear and a choice of pad compound, it suits everything from a fast-road 2JZ cruiser to a harder-driven build that needs the rear to hold its bite under sustained heavy use.

What this big brake kit does for your 1998-2005 Lexus GS 300 JZS161

On a heavy RWD saloon the rear brakes manage stability as much as outright stopping, and a tired OE rear is what lets the back step wide or go vague under trail-braking. The vaned hollow rotor trims rotating and unsprung mass, so the rear responds more cleanly to pedal input and sheds heat faster between stops. The fixed caliper clamps the disc evenly across its face, which firms up the pedal and resists the fade that creeps in on long descents or repeat hard stops, while braided lines remove the OE hose swell that softens feel. Three pad compounds let you match the rear bias to how the JZS161 actually gets used: Street for quiet, low-dust daily driving, Sport for firmer fast-road bite and a wider heat range, and Racing for sustained track work, rather than running a single compromise pad.

About the Hollow rear brake kit

The Hollow kit takes its name from the vaned hollow rotor, which removes rotating and unsprung mass where it matters most on a car this size. The two-piece floating disc, drilled or slotted at the same price, pairs with a rigid fixed-mount caliper to keep clamping pressure consistent as temperatures climb, the weak point of most ageing factory rear setups. The caliper is a hollow-body forged unit as standard, with an optional Hollow Racing upgrade rated to 1000C and warranted two years for hard track use. The φ190 specification is sized to the JZS161 rear corner and retains the parking-brake function that a daily-driven GS still needs, and the kit is supplied for both rear corners. Pad choice spans Street, Sport and Racing, so the same hardware covers a road-biased setup through to a racing pad for track work. Painted caliper finishes are Red, Yellow, Gold, Black and Anodized Black at no cost, with a Custom Color in any Pantone and premium polished-forged and candy options, so the kit can sit discreetly behind a stock wheel or stand out behind an open spoke.

Fitment for the Lexus GS 300 JZS161 (1998-2005)

This kit is built for the JZS161 chassis Lexus GS 300, model years 1998 to 2005, in the φ190 rear specification listed here, and supplied as a matched pair. Confirm your car carries the JZS161 chassis code and the φ190 rear sizing before ordering, as the second-generation GS spanned more than one rear corner across its run. Set your pad compound, disc style and caliper finish from the options when you order.

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Pick your pad compound and caliper finish and configure yours from the options above.