AP Racing Radi-CAL Competition Rear Kit 380mm - R35 Nissan GT-R

The AP Racing by Essex Radi-CAL Competition Brake Kit is a rear brake upgrade for the 2009-2021 R35 Nissan GT-R. It pairs AP Racing CP9450 Radi-CAL Pro5000R racing calipers with 380 x 32mm, 72-vane AP Racing J Hook discs on fully floating aluminum hats, built for track days and competition driving. Fits OEM 20 inch wheels without spacer.

Why upgrade

The kit removes about 15 lb of unsprung weight from the rear of the car compared with the OEM brakes. Each caliper weighs 4.85 lb without pads, against 7.6 lb for the factory iron System caliper. Each two-piece disc weighs 19.1 lb, compared with 26.6 lb for the original 380mm 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 R35 Nissan GT-R, the CP9450 caliper mounts radially on a dedicated bracket at 152mm centers with a 44mm offset, with an M10x1.0 inlet thread. 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. Spiegler stainless steel brake lines with a clear sheath reduce compliance compared with the OEM rubber lines. The caliper uses a commonly available pad shape.

Features

• AP Racing CP9450 0-piston calipers
• 380 x 32mm, 72-vane J Hook discs on floating hats
• About 15 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 380x32mm 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 OEM rear 20 inch and Forgeline GS1-R Gen2, 19x12 +27. Check your wheel with the Essex wheel fitment template before ordering.

Fitment