AP Racing Radi-CAL ENP Competition Rear Kit 365mm - C7 Corvette

The AP Racing by Essex Radi-CAL Competition Brake Kit with ENP (electroless nickel plated) calipers is a rear brake upgrade for every C7 Corvette, 2014-2019. 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.

Why upgrade

The kit removes about 10 lb of unsprung weight from the rear of the car compared with the Z07 CCM brake option, with spares that cost a fraction of the carbon ceramics. Each caliper weighs 4.80 lb without pads, against 5.0 lb for the factory rear caliper. The 16.75mm pad is thicker than the 16.0mm factory pad, so it lasts longer and absorbs more heat between changes. The OEM parking brake keeps working. The ENP (electroless nickel plated) finish is very durable and easy to clean. 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 C7 Corvette, the CP9450 caliper mounts radially on a dedicated bracket at 152mm centers with a 44mm offset, with an M10x1.0 inlet thread. 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 electroless nickel plated finish resists wear and deterioration, even at high temperatures. Ventilated, domed-back stainless steel pistons keep heat out of the brake fluid for a very firm pedal.

Features

• AP Racing CP9450 0-piston calipers in ENP finish
• 365 x 30mm, 72-vane J Hook discs on floating hats
• About 10 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 in ENP Finish (Electroless Nickel Plated)
• One pair 365x30mm AP Racing CP8972, 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 C7 Z06 20 inch, Forgeline GA1R 18x13 +62, CCW C10 18x13 recommended offset for C6Z (don't know actual number),, spacer used to clear wheel away from Upper Control Arm when suspension, is at full droop due to 13 inch width. and CCW 18x13.5 custom offset. Check your wheel with the Essex wheel fitment template before ordering.

Fitment