XYZ Racing Hollow Rear Brake Kit — Porsche 996 C4S TURBO (2001-2005)

The 996 generation was Porsche’s first water-cooled 911, and it kept the layout that defines the car: the engine slung out behind the rear axle. That rearward weight bias is why the back brakes on a 996 work harder than they do on almost any front-engined rival, and why the C4S Turbo’s wide-body, all-wheel-drive package puts even more load through the rear corners under heavy braking.

This XYZ Racing Hollow Rear Brake Kit for the Porsche 996 C4S Turbo (2001-2005) is built to take that load on repeat. It is a rear-axle kit – a matched pair of left and right calipers and two uprated discs. The hollow-vane disc cuts rotating and unsprung mass at the rear axle, while the big-brake caliper and choice of pad compound let you match the setup to road, fast-road, or circuit use.

What this brake kit does for your 2001-2005 Porsche 996 C4S Turbo

On a heavy all-wheel-drive 996, the gain you feel first is fade resistance: the rear discs shed heat rather than soaking it, so pedal feel stays consistent once you start stringing corners together. The hollow-vane disc trims unsprung mass at the back axle, which sharpens how the rear of the car settles under trail braking – useful on a 911, where the tail is always the part you are managing. Pad choice does the rest. The Street compound suits everyday driving, the Sport compound adds bite for spirited road work, and the Racing compound is there when surface temperatures climb on track. Across all three, the kit is sized to balance the front of the car rather than overwhelm it, keeping brake bias predictable.

About the Hollow rear brake kit

The Hollow rear brake kit takes its name from its disc design. Rather than a solid one-piece rotor, the disc uses a hollow-vane, weight-optimised structure that lowers rotating mass without giving up swept area, so the rear axle has less inertia to accelerate and slow. The rotors are two-piece floating discs run on braided lines, keeping the face flat and the pedal firm under heat, and less unsprung weight at each corner eases the work the suspension does over rough surfaces. The kit pairs those discs with a big-brake caliper and is built around a pad compound chosen at order: Street, Sport or Racing. That spread is deliberate, letting the same hardware cover a daily-driven 996 and a car that spends weekends on circuit, with only the pad and fluid choices changing between the two. Calipers are hollow-bodied as standard, with an optional Hollow Racing upgrade (no dust cover, rated 1000C, two-year warranty) for hard track use. Painted finishes are included free in Red, Yellow, Gold, Black and Anodized Black; a Custom Color in any Pantone is +£150, with premium polished-forged Titanium, Polished Gold and Polished Silver and candy Teal, Blue, Red and Orange finishes available. Discs are drilled or slotted at the same price, with two-tone anodized or titanium centre bells selectable at checkout. It is a rear-specific kit, meant to complement a matching front setup and hold the front-to-rear balance the 911 platform depends on.

Fitment for the Porsche 996 C4S Turbo (2001-2005)

This kit is specified for the wide-body Porsche 996 C4S Turbo built between 2001 and 2005, and fits the rear axle only as a rear-position kit. Confirm your exact model year falls within the 2001-2005 span, and check wheel clearance before ordering, as big-brake hardware sets a minimum wheel diameter.

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Choose your pad compound and caliper colour from the options above and configure your Porsche 996 C4S Turbo rear brake kit.