AP Racing J Hook 380mm Rear Floating Racing Brake Rotors

Replacement Rotors only (no hats) for 13.01.20018 which fit the Following Cars (w/ OEM Iron Rotors)

• Porsche 992 GT3 (Rear)
• Porsche 992 GT3RS (Rear)
• Porsche 718/982 GT4RS (Rear)
• Porsche 991 GT2RS/GT3/GT3RS (Rear)
• Porsche 981 GT4 (Rear)

Sold/priced per pair.

Bedding and preparation of AP Racing J Hook Disc

Properly preparing your new brake discs before heavy use is extremely important. The goal of bedding-in your brake pads and discs is to mate them together properly and prepare them for heavy use.  When prepared properly, or bed-in, your pads will transfer a thin layer of material to the disc face (transfer layer).  The pads in your caliper will then actually ride on that thin layer of pad material you’ve put down on the rotor, rather than rubbing directly on the iron rotor face.  A good transfer layer is going to give you superior brake pedal feel, less noise, superior pad wear, and lower the chances of cracking your discs.

Important Notes- PLEASE READ! First, make sure you are on a closed course to perform a proper bed-in.  Do NOT perform the procedure on public roads.  You need a stretch of asphalt with long straights, good visibility, and no potential obstructions.  Make sure you are in a position to safely and repeatedly attain the necessary speeds to perform the bed-in procedure.  A controlled racetrack is the best place to perform this procedure.  AP Racing and Competition Motorsport in no way suggest or condone speeding on public roads or breaking the law in your car, nor do we take responsibility for any damage or injury that occurs as a result of using our product or these procedures.  You are performing the bed-in procedure at your own risk. 

During these procedures, it’s critical that you never come to a complete stop with your foot on the brake pedal.  If you have brake ducts on your car, you may want to block them off to allow your brake system to heat up easily. The procedure outlined below is a generic procedure for most types of mild race pad.  Please check your pad manufacturer’s recommended bed-in procedure.

Accelerate to approximately 60mph and then decelerate down to 5 mph.  If your car has ABS, you should try to hold the brakes at a point just before ABS intervention. 

Once the car slows to 5mph, immediately accelerate back up to about 60mph, and brake again to roughly 5mph. 

Repeat this series of stopping and accelerating 8 to 10 times.  Again, do not come to a complete stop with your foot on the brake pedal.

Cool the brake system down by cruising at 45mph+ for 5 to 10 minutes.

Visually inspect your discs.  They should be a blue/grey color (instead of shiny silver), and have an even layer of pad material across and around the entire rotor face.

If the AP Racing rotors don’t have a layer of pad material on them, perform another series of stops in the manner outlined above.