AP Racing Radi-CAL Competition Rear Kit 365mm - Porsche 992 Carrera

The AP Racing by Essex Radi-CAL Competition Brake Kit is a rear brake upgrade for the Porsche 992 911 Carrera, Carrera S, 4, 4S, Targa and T. It pairs AP Racing CP9450 Radi-CAL Pro5000R racing calipers with 365 x 30mm, 72-vane AP Racing J Hook discs on fully floating aluminum hats, built for track days and competition driving. Fits centerlock wheel where the disc is sandwiched between the hub and drive pins.

Why upgrade

The kit removes about 5 lb of unsprung weight from the rear of the car compared with base/Carrera T and roughly 10 lbs. vs Carrera S iron, despite larger discs. Each caliper weighs 4.85 lb without pads, against 5.9 lb for the factory porsche 992.1 Carrera S caliper. Each two-piece disc weighs 17.5 lb, compared with 22.1 lb for the original 350mm disc. The caliper takes a 16.75mm thick pad for long life and heat tolerance. The OEM parking brake keeps working. The caliper takes pads from all major pad manufacturers. Every component is designed to resist the heat of extended track sessions. Pistons are sized to work seamlessly with the OEM master cylinder and ABS.

Caliper and disc construction

On the Porsche 992 Carrera, the CP9450 caliper mounts radially on a dedicated bracket at 152mm centers with a 44mm offset, with an M10x1.0 inlet thread. Anti-knockback springs behind the caliper pistons limit pad knockback. Stainless steel caliper hardware gives a long service life even with frequent pad changes. There are no dust boots to burn up at track temperatures. Pads change with one bolt, with no caliper removal. The championship-winning 72-vane AP Racing J Hook discs are fully floating. The discs use anti-knockback, anti-rattle attachment hardware. The disc metallurgy is designed for the temperatures seen on track, for a long service life.

Features

• AP Racing CP9450 four-piston calipers
• 365 x 30mm, 72-vane J Hook discs on floating hats
• About 5 lb less unsprung weight
• 16.75mm thick brake pads
• Pistons sized for the OEM master cylinder and ABS

What's Included

• One pair AP Racing CP9450 Radi-CAL Pro5000R racing calipers
• One pair 365x30mm AP Racing 72 vane, J Hook racing discs, with fully floating 6061 hard anodized aluminum hats and attachment hardware
• One pair caliper mounting brackets and hardware
• One pair Spiegler Stainless Steel Brake Lines with abrasion resistant coating
• Detailed installation instructions

Brake pads are not included.

Specifications

Video

Fitment notes

This rear kit fits the vehicles in the table below, which we confirmed against two sources using US model years. Essex has confirmed clearance with Wheel Fitment Template. Check your wheel with the Essex wheel fitment template before ordering.

Fitment