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AP Racing Radi-CAL ENP front brake kit for the S550 Mustang with nickel calipers, 372mm discs and lines

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Angled view of the ENP Radi-CAL front caliper for the 2015-2023 Ford Mustang

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Rear three-quarter view of the electroless nickel AP Racing caliper and bridge

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Inner face of the nickel finished Radi-CAL caliper with bleed screws for the S550

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Top down view of the ENP caliper pad window and pad retention hardware

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End view of the nickel plated six-piston caliper used in the Mustang front kit

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Close up of the pistons inside the ENP Radi-CAL caliper for the S550 Mustang

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AP Racing Radi-CAL ENP Competition Front Kit 372mm - S550 Mustang

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Brand: AP RacingSKU / Part #: 13.01.10119-ENP

Regular price: $5,899.00
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AP Racing Radi-CAL ENP Competition Front Kit 372mm - S550 Mustang

Subtotal: $5,899.00

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Overview

The AP Racing by Essex Radi-CAL ENP Competition Brake Kit is a front brake system for the 2015-2023 S550 Ford Mustang, including the EcoBoost, GT, GT Performance Pack and Mach 1. It pairs AP Racing CP9668 Radi-CAL Pro5000R six-piston calipers in an electroless nickel plated finish with 372 x 34mm, 72-vane J Hook discs, and it is not intended for the Shelby GT350 or GT500.

Why upgrade

The S550 is a heavy car, and even the Performance Pack Brembo package is massive: its 380mm disc alone weighs 34.4 pounds. This kit's floating 372mm disc weighs 20.1 pounds, and each caliper is 6.9 pounds against 10.2, for close to 30 pounds of unsprung weight removed from the nose. The 25mm pad is far thicker than the factory 15.8mm pad, so it lasts longer and stays cooler. Pistons are sized for the OEM master cylinder and ABS, and the kit clears OEM 19 inch wheels without a spacer.

ENP caliper and disc construction

The CP9668 is an asymmetric, computer-optimized Radi-CAL caliper. Its electroless nickel finish resists wear and deterioration even at high temperatures and cleans up easily. Stainless steel pistons, anti-knockback springs and low-drag seals keep the pedal firm through long sessions. The CP7177 discs sit on 6061 hard anodized aluminum hats with fully floating hardware.

Features

AP Racing CP9668 Radi-CAL six-piston calipers in ENP finish
372 x 34mm, 72-vane J Hook discs on floating hats
Close to 30 lb lighter than the OEM Performance Pack brakes
Clears OEM 19 inch wheels and many 18 inch track wheels
Works with the OEM rear brakes or the matching AP Racing rear kit

What's Included

One pair AP Racing CP9668 Radi-CAL Pro5000R six piston calipers in ENP finish (Electroless Nickel Plated)
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

Manufacturer part number	13.01.10119-ENP
Brand	AP Racing by Essex
Position	Front
Application	Track
Finish	ENP (Electroless Nickel Plated)
Caliper	AP Racing CP9668-2S4L/3S4L Radi-CAL Pro5000R, six piston, radial mount
Caliper weight (no pads)	6.9 lb each (OEM GT Performance Pack 10.2 lb)
Piston area	50.1 cm2 total
Mounting centers / offset	180mm / 42mm
Inlet thread	M10x1.0
Disc	CP7177-350/351GC two-piece floating, 372 x 34mm, 72 vanes, J Hook
Disc weight	20.1 lb each (OEM GT Performance Pack 380 x 34mm, 34.4 lb)
Pad thickness	25mm (OEM 15.8mm)
Brake pads	Not included
Shipping weight	40 lb (18.1 kg)

Video

Fitment notes

Fits the S550 Mustang models below, including GT Performance Pack cars. Not for the Shelby GT350 or GT500. Clears OEM 19 inch wheels without a spacer and fits inside many popular 18 inch track wheels; confirm aftermarket wheels with the wheel fitment template.

Fitment

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.
Year	Make	Model	Chassis	Engine
2015-2023	Ford	Mustang EcoBoost	S550	2.3L Turbo I4
2015-2023	Ford	Mustang GT	S550	5.0L V8
2021-2023	Ford	Mustang Mach 1	S550	5.0L V8

Fitment

Year	Make	Model

Not sure? Text us your VIN and we’ll confirm.

Shipping & returns

Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.

Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.

Not returnable: special-order or custom items, and anything that has been installed, modified or altered.

Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.

Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.

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