XYZ Racing Hollow Rear Brake Kit — Mazda RX-7 FC3S (1989-1991)

For trail-braking a light-tailed FC3S into a slow corner, the rear axle does more work than most owners expect, and a tired factory setup is the first thing to give up. This XYZ Racing rear brake kit addresses that directly on the second-generation RX-7, giving the back axle the bite and heat tolerance to support the front under repeated heavy stops. It is built for the way an FC actually rotates: 13B revs climbing, the tail keen to come round, the driver leaning on the brakes deep into the apex.

The kit is a pair of left and right rear calipers with matched discs, offered with three pad compounds, Street, Sport and Racing, so the same hardware suits a road-driven FC, a fast-road car, or a chassis that sees regular track sessions. Match the compound to how hard the rear is worked, and leave the rest of the system to do its job.

What this brake kit does for your 1989-1991 Mazda RX-7 FC3S

After fitting, the clearest gain is consistency. The FC’s rear brakes stop fading early under repeat use, so the pedal stays firm through a session rather than going long after a handful of hard laps. With the Racing compound, the rear holds bite at the temperatures a tracked rotary generates; the Sport compound covers fast-road work with a wider heat range; the Street compound keeps clean cold stops and quiet daily manners. Because the FC carries a modest rear weight bias, a rear axle that resists fade also keeps the car’s brake balance predictable, which matters when you are managing a tail that wants to step out on lift.

About the Hollow Rear Brake Kit

This is a direct rear-axle upgrade for the FC3S, supplied as a matched caliper-and-disc package rather than a pad swap. The discs are two-piece floating units of hollow construction, offered drilled or slotted at the same price, with two-tone anodized centre bells in five colours or titanium selectable at checkout. The hollow-body caliper is standard, with an optional Hollow Racing upgrade rated to 1000C, no dust cover and a two-year warranty for serious track use. Calipers come in the included painted finishes (Red, Yellow, Gold, Black and Anodized Black), a Custom Color matched to any Pantone, or the premium polished and candy ranges, so the kit can sit discreetly behind the wheels or stand out as part of the build. The three-stage pad choice (Street, Sport, Racing) lets you set the rear’s character without changing the underlying hardware. It is conceived as the rear half of a balanced big-brake setup, where the gains come from heat capacity and consistent friction rather than headline numbers alone.

Fitment for the Mazda RX-7 FC3S (1989-1991)

This kit is specified for the rear axle of the FC3S-generation Mazda RX-7, covering the 1989 to 1991 model years, and ships as a matched pair of rear calipers and discs. It is a rear-position kit, so pair it with a matching front setup if you are refreshing the whole car.

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Set your pad compound, disc style and caliper colour, then configure yours from the options above when you order.