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AP Racing Radi-CAL rear brake kit for the C5 Corvette with black calipers, 340mm discs and lines

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Back of the black four-piston rear caliper with yellow bleed cap, C5 Corvette kit

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Front three-quarter view of the Pro 5000R rear caliper for the Corvette Z06

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Top view of the rear caliper with pad pin across the open pad window

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Pistons visible inside the AP Racing four-piston rear caliper for the C5

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Close up of the pad retaining pin and bridge of the C5 rear caliper

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AP Racing Radi-CAL Competition Rear Brake Kit 340mm - C5 Corvette

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Brand: AP RacingSKU / Part #: 13.01.10058

Regular price: $4,599.00
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AP Racing Radi-CAL Competition Rear Brake Kit 340mm - C5 Corvette

Subtotal: $4,599.00

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Overview

The AP Racing by Essex Radi-CAL Competition Brake Kit is a rear brake upgrade for every 1997-2004 C5 Corvette, including the Z06. It replaces the factory rear calipers and 305mm discs with AP Racing CP9449 Radi-CAL four-piston calipers and 340 x 28mm, 48-vane heavy duty J Hook discs, while keeping the factory parking brake functional.

Why upgrade

The C5 remains one of the best value track cars available, but its rear brakes were never designed for repeated hard stops from high speed. This kit adds disc diameter and thickness with no weight penalty: each caliper weighs 4.85 pounds against 6.4, and each floating disc weighs 11.1 pounds against 13.2 for the factory one-piece part. It is designed to complement the AP Racing front kits for the C5, restoring brake balance after a front upgrade.

Caliper and disc construction

The CP9449 is a radial-mount Radi-CAL caliper with an asymmetric, hard anodized body. Stainless pistons, anti-knockback springs and low-drag seals keep pedal feel consistent through long sessions. The CP6565 heavy duty discs ride 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 CP9449 Radi-CAL four-piston rear calipers
340 x 28mm, 48-vane heavy duty J Hook discs
Retains the OEM parking brake
Lighter than the OEM rear brakes despite the larger disc
Pairs with AP Racing C5 front kits

What's Included

One pair AP Racing CP9449 Radi-CAL Pro5000R racing calipers
One pair 340x28mm AP Racing CP6565 heavy duty 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	13.01.10058
Brand	AP Racing by Essex
Position	Rear
Application	Track
Caliper	AP Racing CP9449-2/3S4L Radi-CAL Pro5000R, four piston, radial mount
Caliper weight (no pads)	4.85 lb each (OEM 6.4 lb)
Piston sizes	28.58mm x 2, 34.0mm x 2 (30.9 cm2 total area)
Mounting centers / offset	152mm / 44mm
Inlet thread	M10x1.0
Disc	CP6565-228/229GA two-piece floating, 340 x 28mm, 48 vanes, J Hook (OEM 305 x 26mm)
Disc weight	11.1 lb each (OEM 13.2 lb)
Pad thickness	16.75mm
Parking brake	Retains OEM parking brake
Brake pads	Not included
Shipping weight	40 lb (18.1 kg)

Video

Fitment notes

Fits every C5 Corvette below, coupe, convertible and Z06, and keeps the factory parking brake. Clears the OEM rear C5 Z06 18 inch and C6 Z06 19 inch wheels without a spacer.

Fitment

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.
Year	Make	Model	Chassis	Engine
1997-2004	Chevrolet	Corvette	C5	5.7L V8 (LS1)
2001-2004	Chevrolet	Corvette Z06	C5	5.7L V8 (LS6)

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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