AP Racing Competition Front Kit 372mm - S550 Mustang

The AP Racing by Essex Competition Brake Kit is a front brake upgrade for the 2015-2023 S550 Mustang, including Mach 1. It pairs AP Racing CP5060 racing calipers with 372 x 34mm, 72-vane AP Racing J Hook discs on fully floating aluminum hats, built for track days and competition driving. Fits inside many popular 18 inch track wheels.

Why upgrade

The kit removes about 30 lb of unsprung weight from the front of the car compared with the OEM GT/PP brakes. Each caliper weighs 6.6 lb without pads, against 10.2 lb for the factory six-piston Brembo caliper. Each two-piece disc weighs 19.1 lb, compared with 34.4 lb for the original 380mm disc. The 18mm pad is thicker than the 15.8mm factory pad, so it lasts longer and absorbs more heat between changes. 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. It works with the OEM rear brakes or a matching AP Racing rear kit.

Caliper and disc construction

On the S550 Mustang, the CP5060 caliper mounts radially on a dedicated bracket at 180mm centers with a 45.8mm offset, with an M10x1.0 inlet thread. Pads change with two bolts or a quick-change spring clip, 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 18mm thick pad shape. Ventilated, domed-back stainless steel pistons keep heat out of the brake fluid for a very firm pedal.

Features

• AP Racing CP5060 six-piston calipers
• 372 x 34mm, 72-vane J Hook discs on floating hats
• About 30 lb less unsprung weight
• 18mm thick brake pads
• Pistons sized for the OEM master cylinder and ABS

What's Included

• One pair AP Racing CP5060 racing calipers
• One pair 372x34mm AP Racing CP7177, 72 vane, J Hook racing discs, with fully floating 6061 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 front kit fits the vehicles in the table below, which we confirmed against two sources using US model years. Essex has confirmed clearance with OEM 19 inch GT Performance Pack. Check your wheel with the Essex wheel fitment template before ordering.

Fitment