AP Racing
AP Racing 12-Bolt, Floating Hat, Disc Attachment Hardware Kit
$40.00
AP Racing 12-Bolt, Floating Hat, Disc Attachment Hardware Kit
AP Racing rotor disc attachment hardware kit for AP Racing floating hat, two-piece discs. This kit includes 12 bolts, 12 nuts and 24 washers and does one rotor ring.
AP Racing 12-Bolt, Floating Hat, Disc Attachment Hardware Kit Details:
Manufacturer: AP Racing
Manufacturer US part number: AP-13.04.40003
Bolts: 12
Nuts: 12
Washers: 24
Torque: 10 foot lbs. / 124 inch lbs
AP Racing
AP Racing 372x34mm Replacement Rotor Rings
$549.00
AP Racing 372x34mm Replacement Ring
AP Racing replacement 372x34mm J Hook rotor discs are used in many of the AP Racing brake kits. These replacement rotor ring measures 372mm x 34mm and features 72 directional cooling vanes. The AP Racing 13.05.10052 and 13.05.10053 rotor rings are directional, curved vane, heat treated and stress relieved. These are the exact AP Racing rotor rings as CP7177-350GC and CP7177-351GC with the USA AP 13.05.10052 and 13.05.10053 part numbers. Same rings, different part part numbers.
AP Racing J Hook Competition Disc Replacement Ring 372x34mm Details:
Manufacturer: AP Racing
Manufacturer US part number right: AP-13.05.10052
AP Racing part number right: CP7177-350GC
Manufacturer US part number left: AP-13.05.10053
AP Racing part number left: CP7177-351GC
Slotted face: Yes
Diameter: 372mm (11.65")
Thickness: 34mm (1.34")
Hardware included: No
Torque specs for this disc and hardware assembly: 124 lb-in
Iron Disc Benefits
So what can AP Racing J Hook iron discs do for a car previously equipped with carbon ceramic discs?
Increased airflow and slower heat transfer to other brake components- AP Racing J Hook discs have a unique, high-count vane design that promotes airflow, heat evacuation, and rapid cooling. They don't rely on a large surface area to cool via radiation. The iron discs will move more air than your carbon ceramic's, and as a result they won't heat your brake pads, caliper pistons, and brake fluid up as quickly. You'll be able to run longer sessions without brake fade, and you'll enjoy the confidence that comes along with them. They'll also make any brake ducts that you have on the car more effective and useful.
Huge range of compatible brake pad compounds- Iron discs will open up a much greater range of available brake pads. You'll be able to achieve a different feel, and tailor your brake setup depending on your needs and environment, whether that is running an AutoX or the most demanding racetrack in your area. You'll also likely be paying less per brake pad set than you were previously, and your pads will last longer.
Inexpensive spare discs- You'll no longer have to spend thousands of dollars when it's time to replace your discs. AP Racing J Hook's typically only cost $400-600 per iron disc ring, so you won't have to stress about anything happening to them. They're inexpensive enough that you can always keep a spare set on hand, so you won't have to worry about any brake-related downtime when you're out at the track.
Durability- Iron discs can take a beating. You can stash your spares in your race trailer, and you won't have to worry about handling them, covering them, dinging them, or chipping them when changing your wheels.
As you can see, although iron discs do come with a slight weight penalty, they're still the smart choice if you run your car hard on the racetrack. They're the obvious solution that has been proven countless times on tracks around the world, at all levels of motorsport.
Among iron disc choices, there are none better than AP Racing J Hooks. AP Racing J Hook Discs are the epitome of endurance racing components. They will hold up extremely well to any abuse you plan to throw at them. These discs have been proven time and again in professional racing, winning many races and championships (SRO, IMSA, WEC, Rolex, etc.).
Two-piece Floating Design with Aluminum Hat
As is the case with most metal, iron brake discs grow substantially when heated. As it is heated, a disc expands radially, increasing in diameter and circumference. One-piece disc designs run into problems when this occurs. Look at the picture below and imagine the disc is being heated on the track. As the disc expands, the outer edges of the disc are pulling away from the center of the disc, but there are no built-in provisions to allow for that expansion. The edges of the disc therefore pull, lift, and distort, which is called coning. Now imagine that disc vertical on the car, running in your caliper. Coning directly impacts the brake pads’ contact with the disc, leading to uneven wear and tapering, and even a long brake pedal.
Two-piece discs on the other hand, compensate for the expansion of the disc as it heats. This is accomplished by building ‘float’ into either the disc itself, or the disc hat/bell. In this case, the float is in the disc. If you look closely at the picture below, you can see that the mounting holes for the hat attachment bobbins are not round. They are an oblong shape. These channels allow the hat mounting hardware to slide as the disc is heated and expands, allowing the disc to run true in the caliper without distortion. That means less distortion, stress cracks, and pad taper.
AP Racing
AP Racing by Essex Endurance Front Brake Kit (325mm) for Subaru BRZ/Scion FR-S/Toyota GT86/GR86 (2013+)
$3,099.00
Complete Front AP Racing Competition Endurance Brake Kit
Subaru BRZ, Scion FR-S, or Toyota GT86/GR86 (2013+)
Clears Gen 2 (2022 and up) 17- and 18-inch wheels without need for a spacer
Features AP Racing CP8350 four-piston calipers
325mm x32 mm, 70 vane AP Racing two-piece floating rotors
Saves approximately 10 lbs. of unsprung weight from nose vs. OEM brakes
Every component is designed to resist the heat of extended racing stints
Pistons are sized to allow for seamless integration with OEM master cylinder and ABS system
Designed to work with OEM rear brakes
Brake Pads That Fit These Calipers:
Carbotech CTW7420
Ferodo FRP3097 D50
PFC 7751.xx.20
AP Racing
AP Racing by Essex Front Brake Kit (380mm) for F87 BMW M2 (All), F80 M3, F82 M4
$4,999.99
Complete AP Racing Front Road Brake Kit
F87 BMW M2/M2 Competition/M2 CS, F80 M3, F82 M4
Saves approximately 10 unsprung lbs. vs. M2 Competition front brakes
Painted calipers with dust boots add durability in inclement weather conditions
Low noise, vibration, and harshness for a very OE-like experience during daily driving
Huge 380x36mm, 72 vane AP Racing J Hook, fully-floating 2-piece discs
Leverages six piston AP Racing CP9562 World Radi-CAL II calipers with a red, black, or silver painted finish
Utilizes large volume brake pads for heat absorption and longevity
Pistons sized properly to maintain brake bias and work with the OEM master cylinder and ABS system
Designed to mate with OEM rear brakes or our matching rear AP Racing Road Brake Kit
This AP Racing Road Brake Kit Includes:
One pair of AP Racing CP9562 World Radi-CAL II six-piston calipers
One pair of 380mm x 36mm, 72-vane AP Racing CP7177 J-Hook rotors with fully floating 6061 hard anodized aluminum hats and attachment hardware
One pair of caliper mounting brackets and hardware
One pair of Spiegler stainless steel brake lines with abrasion-resistant coating
One set of Ferodo DS2500 brake pads
Detailed installation instructions
AP Racing
AP Racing by Essex Rear Brake Kit (380mm) for F87 BMW M2, F80 M3, F82 M4
$4,799.99
AP Racing Rear Big Brake Kit
F87 BMW M2, M2 Competition, M2 CS, F80 M3, F82 M4
Saves several unsprung lbs. vs. the OEM rear brakes
Retains full function of OEM parking brake
Painted calipers with dust boots add durability in the most punishing driving conditions
Low noise, vibration, and harshness for a very OEM-like experience during daily driving
Features the game-changing AP Racing Radi-CAL II fixed calipers with a red, black, or silver painted finish
Huge 380mm AP Racing J-Hook, fully-floating two-piece discs
Caliper pistons sized properly to maintain proper brake bias and work with the OEM BMW master cylinder and ABS system
Designed to mate with this front AP Racing Big Brake Kit
AP Racing Rear Big Brake Kit Includes:
One pair of AP Racing CP9541 World Radi-CAL II four-piston fixed calipers
One pair of 380mm x 28mm 72-vane AP Racing CP5914 J-Hook discs with fully floating 6061 hard anodized aluminum hats and attachment hardware
One pair of caliper mounting brackets and hardware
One pair of Spiegler stainless steel brake lines with abrasion-resistant coating
One set of Ferodo DS2500 brake pads
Detailed installation instructions
AP Racing
AP Racing by Essex Sprint Front Brake Kit (299mm) for Subaru BRZ/Toyota GR86 (2022+)
$2,499.00
Complete AP Racing Front Brake Kit for Sprint Races
For the Subaru BRZ & Toyota GR86 (2022+)
Newly designed caliper brackets and rotors accommodate the 2022+ BRZ aluminum spindles (old Gen 1 kits will not fit the Gen 2 cars)
Clears Gen 2 (2022 and up) 17- and 18-inch wheels without need for spacers
Features AP Racing CP8350 four-piston fixed calipers
299mm x 32mm 60-vane AP Racing two-piece floating rotors
Saves 20 lbs. of unsprung weight from the nose of vs. OEM brakes
Every component is designed to resist the heat of extended lapping on the race track
Pistons are sized to allow for seamless integration with the OEM master cylinder and ABS system
Designed to work with OEM rear brakes
AP Racing
AP Racing J Hook Competition Disc 355x32mm D54
$529.00
AP Racing 2-piece J Hook Disc Front Rotor Kit 355x32mm
Measuring 355mm x 35mm the AP Racing 13.05.10066 and 13.05.10067 are J Hook Competition Discs has a 54mm annulus with 72 directional cooling vanes used on the popular AP 13.01.10024 AP Racing C5 Corvette Front Six Piston Competition Brake Kit.
AP Racing 2-piece J Hook Disc Front Rotor Kit 355x32mm Details:
Manufacturer: AP Racing
Manufacturer part number right side: 13.05.10066
Previous part number right side: 13.05.10002
Manufacturer part number left side: 13.05.10067
Previous part number left side: 13.05.10003
Slotted face: Yes
Diameter: 355mm
Thickness: 32mm
Annulus radial depth: D54
Aluminum hat included: No
Rotor harwdare included: Nos
14.0" x1.26" (355mm x 32mm), 72 Vane
Significant unsprung weight reduction (over 3 lbs. per side)
Much wider air gap and twice as many full internal cooling vanes reduce pad wear and brake fluid temps
Fully floating vs. standard fixed-hat design= less coning, cracking, vibration/judder
Aircraft nuts eliminate hassle of safety wire
Crack-resistant disc metallurgy specifically designed to offer a long service life
Anti-knockback disc attachment hardware reduces pad knockback through S-turns
Common Fitment:
AP Racing C5 Corvette Front Six Piston Competition Brake Kit
Iron Disc Benefits
So what can AP Racing J Hook iron discs do for a car previously equipped with carbon ceramic discs?
Increased airflow and slower heat transfer to other brake components- AP Racing J Hook discs have a unique, high-count vane design that promotes airflow, heat evacuation, and rapid cooling. They don't rely on a large surface area to cool via radiation. The iron discs will move more air than your carbon ceramic's, and as a result they won't heat your brake pads, caliper pistons, and brake fluid up as quickly. You'll be able to run longer sessions without brake fade, and you'll enjoy the confidence that comes along with them. They'll also make any brake ducts that you have on the car more effective and useful.
Huge range of compatible brake pad compounds- Iron discs will open up a much greater range of available brake pads. You'll be able to achieve a different feel, and tailor your brake setup depending on your needs and environment, whether that is running an AutoX or the most demanding racetrack in your area. You'll also likely be paying less per brake pad set than you were previously, and your pads will last longer.
Inexpensive spare discs- You'll no longer have to spend thousands of dollars when it's time to replace your discs. AP Racing J Hook's typically only cost $400-600 per iron disc ring, so you won't have to stress about anything happening to them. They're inexpensive enough that you can always keep a spare set on hand, so you won't have to worry about any brake-related downtime when you're out at the track.
Durability- Iron discs can take a beating. You can stash your spares in your race trailer, and you won't have to worry about handling them, covering them, dinging them, or chipping them when changing your wheels.
As you can see, although iron discs do come with a slight weight penalty, they're still the smart choice if you run your car hard on the racetrack. They're the obvious solution that has been proven countless times on tracks around the world, at all levels of motorsport.
Among iron disc choices, there are none better than AP Racing J Hooks. AP Racing J Hook Discs are the epitome of endurance racing components. They will hold up extremely well to any abuse you plan to throw at them. These discs have been proven time and again in professional racing, winning many races and championships (SRO, IMSA, WEC, Rolex, etc.).
Two-piece Floating Design with Aluminum Hat
As is the case with most metal, iron brake discs grow substantially when heated. As it is heated, a disc expands radially, increasing in diameter and circumference. One-piece disc designs run into problems when this occurs. Look at the picture below and imagine the disc is being heated on the track. As the disc expands, the outer edges of the disc are pulling away from the center of the disc, but there are no built-in provisions to allow for that expansion. The edges of the disc therefore pull, lift, and distort, which is called coning. Now imagine that disc vertical on the car, running in your caliper. Coning directly impacts the brake pads’ contact with the disc, leading to uneven wear and tapering, and even a long brake pedal.
Two-piece discs on the other hand, compensate for the expansion of the disc as it heats. This is accomplished by building ‘float’ into either the disc itself, or the disc hat/bell. In this case, the float is in the disc. If you look closely at the picture below, you can see that the mounting holes for the hat attachment bobbins are not round. They are an oblong shape. These channels allow the hat mounting hardware to slide as the disc is heated and expands, allowing the disc to run true in the caliper without distortion. That means less distortion, stress cracks, and pad taper.
AP Racing
AP Racing Radi-CAL R1 Racing Brake Fluid
$17.95
Brake Fluid Suitable for All Forms of Motorsport
AP Racing Brake Fluids like the Radi-CAL R1 are developed for road cars being used in events such as autocross and track days, where drivers need brake fluid with a higher boiling point than that of OEM brake fluid.
AP Racing Radi-CAL R1 fluid has the lowest dry boiling point of AP Racing's brake fluid offerings at 269º C / 516º F. It was developed for applications needing more heat resistance than typical OEM brake fluid.
AP Racing Radi-CAL R1 Brake Fluid Details:
Manufacturer: AP Racing
Conforms to FMVSS 116 DOT3 specification
Manufacturer part number: AP-CP7551
New Dry Boiling Point: 269º C / 516º F
Wet Boiling Point: 140º C / 284º F
Bottle Size: 500 ml (16.9 fl oz)
AP Racing
AP Racing Radi-CAL R2 Racing Brake Fluid
$19.95
Outstanding Performance In High-Heat Braking Applications
AP Radi-CAL R2 racing brake fluid was developed for the extreme abuse of heavy race cars competing in endurance events. AP Racing Radi-CAL R2 fluid has a dry boiling point of 312º C (593º F), and was developed for racing applications where high brake temperatures are common, e.g. when using carbon discs and very high temperature brake fluid performance is required.
Before using AP Racing Radi-CAL R2 fluid, any existing brake fluid should be drained completely from the car's brake system. The system should be thoroughly purged with new R2 and can then be filled completely with new R2 fluid.
AP Racing Radi-Cal R2 (Super 600) Brake Fluid Details:
Manufacturer: AP Racing
Manufacturer part number: AP-CP5600
R2 fluid conforms to and exceeds DOT4 specifications, but should not be used with components made from magnesium
Dry Boiling Point: 312º C (593º F)
Wet Boiling Point: 195º C (383º F)
Bottle Size: 500 ml (16.9 oz.)
AP Racing
AP Racing Radi-CAL R3 Racing Brake Fluid
$29.95
Designed For The Top Levels Of Motorsports
AP Radi-CAL R3 was developed for use in very-high-temperature racing conditions. Conforms to and exceeds FMVSS 116 DOT 4 and SAE J1703 and J1704. AP Racing Radi-CAL R3 Racing Brake Fluid is currently one of the most popular brake fluids at the highest levels of professional auto and motorcycle racing. It was specifically developed for coping with extraordinary temperatures, such as those encountered when running a carbon/carbon brake system.
To ensure that the fluid stays fresh, AP brake fluids are furnished in 500 ml (16.9 oz) easy-pour plastic bottles with double-sealed caps. When switching your fluid to AP Racing Radi-CAL R3, we recommend purging all of the old fluid from the system. Three to four bottles of fluid are enough to completely replace existing brake fluid and still have enough left over for a bleed at the track to remove any remaining air bubbles.
AP Racing Radi-CAL R3 Brake Fluid Details:
Manufacturer: AP Racing
Manufacturer part number: AP-CP5660
UPC: 48238040081
DOT Rating: DOT 4
Dry Boiling Point: 325º C (617º F)
Wet Boiling Point: 195º C (383º F)
Compatible with other DOT 4 fluids: Yes
Bottle size: 16.9 fl oz (500ml)
AP Racing
AP Racing Radi-CAL R4 Racing Brake Fluid
$39.25
Highest Dry Boiling Point On The Market Today
AP Racing Radi-CAL R4 racing brake fluid has the highest typical dry boiling point, at 340º C (644º F), of any racing brake fluid currently available on the market today. Radi-CALR4 racing brake fluid has been designed to perform better than any other product at the extremes of heavy-duty braking in top levels of professional racing.
AP Racing Radi-CAL R4 has outstanding resistance to vapor lock and pedal fade under the most exacting conditions. A higher vapor lock point means a firmer brake pedal at the extremes of brake temperatures. Enhanced lubricity means R4 is a better lubricant than other market-leading racing brake fluids. This helps extend the life of the metal moving parts in your brake system while increasing system efficiency.
Radi-CAL R4 can be mixed with other DOT3 and DOT4 racing brake fluid, but for maximum product performance your braking system should be thoroughly purged with R4 fluid.
AP Racing Radi-Cal Pro R4 Brake Fluid Details:
Manufacturer: AP Racing
Manufacturer part number: AP-CP7005
DOT rating: DOT4
Dry Boiling Point: 340º C (644º F)
Wet Boiling Point: 195º C (383º F)
Bottle Size: 500 ml (16.9 fl oz)