AP Racing Radi-CAL Competition Front Brake Kit 372mm - C8 Corvette

The AP Racing by Essex Radi-CAL Competition Brake Kit is a front brake system for the mid-engine C8 Corvette. It fits the Stingray, including Z51 cars, and the Z06, replacing the factory four-piston Brembo calipers and one-piece discs with AP Racing CP9660 Radi-CAL Pro5000R six-piston calipers and 372 x 34mm, 72-vane J Hook discs.

Why upgrade

The C8 is quick enough that its Z51 brakes reach their limit fast on a road course. This kit saves approximately 14 pounds of unsprung weight from the nose versus the OEM Z51 brakes. Each caliper weighs 6.2 pounds against 11.1, and each floating disc weighs 19.1 pounds against 24.0 while growing from 350 x 30mm to 372 x 34mm. The 18mm pad is thicker than the 15.5mm original. It fits behind the OEM Trident wheels without a spacer.

Caliper and disc construction

The CP9660 is a radial-mount Radi-CAL caliper with a computer-optimized, asymmetric body and hard anodized finish. Stainless pistons, anti-knockback springs and low-drag seals keep the pedal consistent. The CP7177 discs sit on 6061 hard anodized aluminum hats with fully floating hardware, and the pistons are sized for the OEM master cylinder and ABS.

Features

• AP Racing CP9660 Radi-CAL six-piston calipers
• 372 x 34mm, 72-vane J Hook discs on floating hats
• About 14 lb lighter than the OEM Z51 brakes
• Clears OEM Trident and Z06 wheels
• Pads available from all major manufacturers

What's Included

• One pair AP Racing CP9660 Radi-CAL Pro5000R six piston calipers
• One pair 372x34mm AP Racing CP7177, 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

Fits the C8 Corvette Stingray and Z06 below. Clears the OEM 19 inch Trident wheel, the OEM Z06 20 inch Spider-design and 10-spoke forged wheels, Forgeline GS1R 18 x 10 ET45, and Forgeline GA1R, VX1R and GT1-5 in 18 x 9.5 and 19 x 9.5 without a spacer. Call us about the E-Ray and 2027 models.

Fitment