AP Racing Radi-CAL Competition Brake Kit (Front 9660/372mm) for Toyota GR Supra

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AP Racing

APP 13.01.10113

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Features AP Racing CP9660 Radi-CAL calipers
372x34mm, 84 vane AP Racing disc
Saves 23 unsprung lbs. from nose vs. OEM brakes!
Clears the OEM Supra wheels without a wheel spacer
Will fit behind many aftermarket 18in track wheels
Every component designed to resist the heat of extended track sessions
Pistons sized properly to maintain proper brake bias and work with the OEM master cylinder and ABS system
Front kits designed to work with either OEM rear brakes or our rear AP Racing BBK
Advantages Over OEM Brake System
Our CP9660/372mm Radi-CAL Competition Brake Kit offers our customers the following advantages over the OEM brake system:

Eliminates 23 lbs. of unsprung weight from the nose of the car
Clears OEM 19in wheels without a spacer and many 18in wheels
AP Racing Radi-CAL calipers are the stiffest, lightest, and most technologically advanced calipers available at any price
CP9660 calipers use a 18mm thick, commonly available brake pad shape
Ventilated, domed back, stainless steel pistons keep heat out of the brake fluid and provide an ultra-firm pedal
Mitigation of pad knockback via anti-knockback springs behind the caliper pistons
Anodized caliper finish that is resistant to wear and deterioration at elevated temperatures
Stainless steel caliper hardware for a long caliper service life under frequent pad change conditions
High temperature, low drag seals that will hold up to track temps= less rebuilding and longer service life
No dust boots to burn up
Simple pad change with two bolts or quick-change spring clip, no caliper removal required
Lifetime professional caliper rebuilding support by Essex (at a fee)- pull off your calipers, send them to us, we clean, inspect, and rebuild them
Available disc burnishing service ensures that your kit arrives ready to be installed and driven hard immediately
Championship winning, 84 vane, fully floating, AP Racing J Hook racing discs with 12 attachment points to hat
Anti-knockback/anti-rattle disc attachment hardware
Replacement iron disc rings available at an extremely competitive replacement price
Disc metallurgy specifically designed to handle the temps typically seen on track offer a long service life
Highest quality, Spiegler stainless steel brake line with clear sheath that reduces compliance over OEM rubber design
Model Year


Essex/AP BBK

Toyota GR Supra



Four piston fixed
Weight no Pads

6.2 lbs.

9.2 lbs.

27.0mm x 2

Piston Sizes

31.8mm x 2

38.1mm x 2

Piston Area


Inlet Thread


Mounting Type


Mtg. Centers


Mtg. Offset


Pad thickness






2-piece floating

Two piece, non-floating


21 lbs.

28.8 lbs.







Radial Depth



No. of Vanes



Returns Policy

--PLEASE NOTE: MOST ORDERS ARE SUBJECT TO RESTOCK OR CANCELATION FEE. PLEASE CALL OUR OFFICE FOR DETAILS AND EXCEPTIONS-- You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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