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AP Racing Radi-Cal 365mm Competition Brake Kit for Porsche (Rear) Fit The Following Cars Porsche 992 Carrera Base and Carrera 4 (PCCB and Iron Rotors) Porsche 992 911 S/4S/GTS (PCCB and Iron Rotors) Complete front AP Racing Radi-Cal Competition Brake Kit for Porsche 992 911 features; Features AP Racing Radi-Cal 9449 calipers  Jewel-like ENP Caliper finish is incredibly durable and easy to clean 365x30mm iron discs are resilient under heavy track use, and replacements cost one tenth of PCCB ($600 vs. $6,000 per disc) Shaves up to  9lbs. off the rear axle vs oem iron brakes Only adds approximately one pound per side of unsprung weight vs. the OEM PCCB setup Fits inside 19" wheels, which the OEM PCCB discs cannot do, allowing for additional unsprung weight reduction plus improved tire options Our AP Racing Radi-Cals feature a removable bridge, making pad swaps far faster and easier than stock calipers Commonly available AP Racing pad shapes provide a wide selection of brake pad choices to tailor system feel and performance Removing the stock calipers and PCCB discs allows them to be preserved undamaged, retaining the vehicle's future resale value AP systems typically trade hands on the used market at 65% or more of their original MSRP, lowering the long-term cost of ownership. Use them for a few years and recoup a large portion of your initial investment. Designed to work with our matching Front Radi-Cal brake kit.

AP Racing Radi-Cal 372mm Competition Brake Kit for Porsche (Front) Fit The Following Cars Porsche 991 Carrera S/4S/GTS (PCCB and Iron Rotors) Porsche 992 Carrera base / Carrera 4 (Iron Rotors) Complete front AP Racing Radi-Cal Competition Brake Kit for Porsche features; Features AP Racing Radi-Cal 9669 calipers with option for 25mm (1 inch) thick pads for extreme durability! Jewel-like ENP Caliper finish is incredibly durable and easy to clean 372x34mm iron discs are resilient under heavy track use, and replacements cost one tenth of PCCB ($600 vs. $6,000 per disc) Shaves over 20 lbs. off the front axle vs oem iron brakes Only adds approximately one pound per side of unsprung weight vs. the OEM PCCB setup Fits inside 19" wheels, which the OEM PCCB discs cannot do, allowing for additional unsprung weight reduction plus improved tire options Our AP Racing Radi-Cals feature a removable bridge, making pad swaps far faster and easier than stock calipers Commonly available AP Racing pad shapes provide a wide selection of brake pad choices to tailor system feel and performance Removing the stock calipers and PCCB discs allows them to be preserved undamaged, retaining the vehicle's future resale value AP systems typically trade hands on the used market at 65% or more of their original MSRP, lowering the long-term cost of ownership. Use them for a few years and recoup a large portion of your initial investment. Designed to work with our matching 365mm Radi-Cal brake kit.

AP Racing Radi-CAL 380mm Competition Brake Kit (Rear) Fit The Following Cars Porsche 991 GT2RS  Porsche 991 GT3  Porsche 991 GT3RS  Complete rear AP Racing Radi-CAL Competition Brake Kit. Fits all variants of the Porsche 991 GT3/3RS/2RS. Eliminates the need to remove the caliper for pad changes Retains OEM parking brake functionality Saves 18 unsprung lbs. vs. OEM iron brakes and weighs almost the same as the OEM PCCB system Jewel-like ENP caliper finish is incredibly durable and easy to clean AP Racing Radi-CAL with durable, ventilated stainless steel pistons (no ceramic piston caps to break) with anti-knockback springs Allows for the preservation of pricey OEM brake components Huge array of brake pad options from all major pad manufacturers Fits OEM 20" wheels without spacer 380x32mm, 72 vane AP Racing disc fits inside popular 19" wheels Every component designed to resist the heat of extended track sessions Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system Includes pad tension kit (eliminates noise) and disc burning at no additional cost Designed to work with Ap Racing front Brake Kit

AP Racing Radi-CAL 380mm Competition Brake Kit (Front) FIT The Following Cars Porsche 992.1 GT3 Cup Car Porsche 991.2 GT3 Cup Car Complete rear AP Racing Radi-CAL Competition Brake Kit. Fits the Porsche 991.2 and 992.1 GT3 Cup car. Complete front AP Racing by Essex Radi-CAL Competition Brake Kit for the Porsche 991.2 GT3 Cup (2017-2020): Eliminates the need to remove the caliper for pad changes Direct bolt-on to OE Porsche Motorsport 991.2 Cup uprights with included spacers AP Racing Radi-CAL CP9665 calipers with durable ventilated stainless steel pistons and anti-knockback springs Hard anodized caliper finish that is resistant to wear and deterioration at elevated temperatures 380mm x 32mm 2-piece floating 72-vane J Hook Discs with D54 radial depth Innovative spline drive system further mitigates knockback and offers highly consistent pedal effort Designed for: club racing, time trial, autocross, HPDE Every component designed to resist the heat of extended track sessions Works with standard OE master cylinder sizes Includes pad tension kit (eliminates noise) and disc burning at no additional cost Designed to work with Ap Racing front Brake Kit

AP Racing Radi-CAL 380mm Competition Brake Kit (Rear) Fit The Following Cars Porsche 992.1 GT3 Cup Car Porsche 991.2 GT3 Cup Car Complete rear AP Racing Radi-CAL Competition Brake Kit. Fits the Porsche 991.2 and 992.1 GT3 Cup car. Eliminates the need to remove the caliper for pad changes AP Racing Radi-CAL with durable ventilated stainless steel pistons and anti-knockback springs Hard anodized caliper finish that is resistant to wear and deterioration at elevated temperatures Large selection of brake pad options from all major pad manufacturers Fits OE 18" GT3 Cup wheels without a spacer 380x32mm, 72 vane AP Racing disc vs. only 48 cooling vanes in the OE disc Works with standard OE master cylinder sizes Every component designed to resist the heat of extended track sessions Designed for: club racing, time trial, autocross, HPDE Includes pad tension kit (eliminates noise) and disc burning at no additional cost Designed to work with Ap Racing front Brake Kit

AP Racing Radi-CAL 380mm Competition Brake Kit GT4 (Rear) Fit The Following Cars Porsche 981 GT4 (PCCB and Iron Rotors)  Porsche 718 GT4 (PCCB and Iron Rotors) Complete rear AP Racing Radi-CAL Competition Brake Kit. Fits all variants of the Porsche 718/981 GT4. Eliminates the need to remove the caliper for pad changes Retains OEM parking brake functionality Saves 18 unsprung lbs. vs. OEM iron brakes and weighs almost the same as the OEM PCCB system Jewel-like ENP caliper finish is incredibly durable and easy to clean AP Racing Radi-CAL with durable, ventilated stainless steel pistons (no ceramic piston caps to break) with anti-knockback springs Allows for the preservation of pricey OEM brake components Huge array of brake pad options from all major pad manufacturers Fits OEM 20" wheels without spacer 380x32mm, 72 vane AP Racing disc fits inside popular 19" wheels Every component designed to resist the heat of extended track sessions Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system Includes pad tension kit (eliminates noise) and disc burning at no additional cost Designed to work with Ap Racing front Brake Kit

AP Racing Radi-CAL 380mm Competition Brake Kit GT4RS (Rear) Fit The Following Cars Porsche 718/982 GT4RS (PCCB and Iron Rotors) Complete rear AP Racing Radi-CAL Competition Brake Kit. Fits all variants of the Porsche 718/982 GT4RS. Eliminates the need to remove the caliper for pad changes Retains OEM parking brake functionality Saves 18 unsprung lbs. vs. OEM iron brakes and weighs almost the same as the OEM PCCB system Jewel-like ENP caliper finish is incredibly durable and easy to clean AP Racing Radi-CAL with durable, ventilated stainless steel pistons (no ceramic piston caps to break) with anti-knockback springs Allows for the preservation of pricey OEM brake components Huge array of brake pad options from all major pad manufacturers Fits OEM 20" wheels without spacer 380x32mm, 72 vane AP Racing disc fits inside popular 19" wheels Every component designed to resist the heat of extended track sessions Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system Includes pad tension kit (eliminates noise) and disc burning at no additional cost Designed to work with Ap Racing front Brake Kit

AP Racing Radi-CAL 380mm Competition Brake Kit GT4 (Rear) Fit The Following Cars Porsche 992 911 Carrera Base / Carrera 4 Porsche 992 911 S/4S/GTS (Iron and PCCB) Complete rear AP Racing Radi-CAL Competition Brake Kit. Fits all variants of the Porsche 992 911 Carrera base and Carrera 4. Eliminates the need to remove the caliper for pad changes Retains OEM parking brake functionality Saves 18 unsprung lbs. vs. OEM iron brakes and weighs almost the same as the OEM PCCB system Jewel-like ENP caliper finish is incredibly durable and easy to clean AP Racing Radi-CAL with durable, ventilated stainless steel pistons (no ceramic piston caps to break) with anti-knockback springs Allows for the preservation of pricey OEM brake components Huge array of brake pad options from all major pad manufacturers Fits OEM 20" wheels without spacer 380x32mm, 72 vane AP Racing disc fits inside popular 19" wheels Every component designed to resist the heat of extended track sessions Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system Includes pad tension kit (eliminates noise) and disc burning at no additional cost Designed to work with Ap Racing front Brake Kit

AP Racing Radi-CAL 380mm Competition Brake Kit Porsche 992 GT3/GT3RS (Rear) Fit The Following Cars Porsche 992 GT3  Porsche 992 GT3RS  Complete AP Racing Radi-CAL Competition Brake Kit. Fits all variants of the Porsche 992 GT3/GT3RS: Eliminates the need to remove the caliper for pad changes Retains OEM parking brake functionality Jewel-like ENP Caliper finish is incredibly durable and easy to clean Saves 18 unsprung lbs. vs. OEM iron brakes and weighs almost the same as the OEM PCCB system AP Racing Radi-CAL with durable, ventilated stainless steel pistons (no ceramic piston caps to break) with anti-knockback springs Allows for the preservation of pricey OEM brake components Huge array of brake pad options from all major pad manufacturers Fits OEM 20" wheels without spacer 380 x 32mm, 72 vane AP Racing disc fits inside popular 19" wheels Every component designed to resist the heat of extended track sessions Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system Includes pad tension kit (eliminates noise) and disc burnishing at no additional cost Designed to work with the front AP Racing Radi-Cal brake kit

AP Racing Radi-Cal 390mm Competition Brake Kit for Porsche (Front) Fit The Following Cars Porsche 991 Carrera S/4S/GTS (PCCB and Iron Rotors) Porsche 992 Carrera base and Carrera 4 (Iron Rotors) Complete front AP Racing Radi-Cal Competition Brake Kit for Porsche 991 911 S/4S/GTS and 992 Carrera base and Carrera 4. Features AP Racing Radi-Cal 9669 calipers with option for 25mm (1 inch) thick pads for extreme durability! Jewel-like ENP Caliper finish is incredibly durable and easy to clean 390x36mm iron discs are resilient under heavy track use, and replacements cost one tenth of PCCB ($600 vs. $6,000 per disc) Shaves over 20 lbs. off the front axle vs oem iron brakes Only adds approximately one pound per side of unsprung weight vs. the OEM PCCB setup Fits inside 19" wheels, which the OEM PCCB discs cannot do, allowing for additional unsprung weight reduction plus improved tire options Our AP Racing Radi-Cals feature a removable bridge, making pad swaps far faster and easier than stock calipers Commonly available AP Racing pad shapes provide a wide selection of brake pad choices to tailor system feel and performance Removing the stock calipers and PCCB discs allows them to be preserved undamaged, retaining the vehicle's future resale value AP systems typically trade hands on the used market at 65% or more of their original MSRP, lowering the long-term cost of ownership. Use them for a few years and recoup a large portion of your initial investment. Designed to work with our matching 365mm Radi-Cal brake kit.

AP Racing Radi-CAL 394mm Competition Brake Kit (Front) Fit The Following Cars Porsche 991 GT2RS  Porsche 991 GT3  Porsche 991 GT3RS  Porsche 718 GT4RS Complete front AP Racing Radi-CAL Competition Brake Kit for the Porsche 991 GT3/3RS/2RS and Porsche Cayman 718 GT4 RS. Features AP Racing Radi-CAL 9669 calipers for extreme durability! Clears many popular 19" and 20" track wheels Durable, ventilated stainless steel pistons (no ceramic piston caps to break) with anti-knockback springs Design eliminates the need to remove caliper for pad changes Saves 10 unsprung lbs. vs. OEM iron brakes and very close in weight to the OEM PCCB system Allows for the preservation of pricey OEM brake components Huge array of brake pad options from all major pad manufacturers 394x34mm, 84 vane AP Racing J Hook Discs Every component designed to resist the heat of extended track sessions Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system Includes the AP Racing pad tension kit and disc burning at no additional cost Designed to work with OEM rear brakes or the AP Racing Rear Brake Kit

AP Racing Radi-CAL 394mm Competition Brake Kit 992 GT3/GT3RS (Front) Fit The Following Cars Porsche 992 GT3  Porsche 992 GT3RS  Complete AP Racing Radi-CAL Competition Brake Kit for the Porsche 992 GT3/GT3RS (Front) May interfere with front anti-roll bar under certain conditions. Please see TSB below. Jewel-like ENP Caliper finish is incredibly durable and easy to clean Durable, ventilated stainless steel pistons (no ceramic piston caps to break) with anti-knockback springs Design eliminates the need to remove caliper for pad changes Saves 17 unsprung lbs. vs. OEM iron brakes and very close in weight to the OEM PCCB system Allows for the preservation of pricey OEM brake components Huge array of brake pad options from all major pad manufacturers 394x34mm, 84 vane AP Racing J Hook Discs Every component designed to resist the heat of extended track sessions Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system Includes pad tension kit (eliminates noise) and disc burnishing at no additional cost Designed to work with OEM rear brakes or the Ap Racing rear brake kit Includes the AP Racing pad tension kit and disc burning at no additional cost Designed to work with OEM rear brakes or the AP Racing Rear Brake Kit Porsche 992 Technical Service Bulletin ("TSB") The Porsche 992 GT3/GT3RS introduced some dramatic suspension changes vs. the 991 chassis, most notably moving from a McPherson Strut configuration to double wishbone at the front of the car.  The resulting packaging and geometry changes create some potential brake clearance issues under certain driving conditions.  With the brake lines attached to the standard front caliper inlet port contact may occur between the brake line banjo fitting and the front anti-roll bar (ARB) drop links or the ARB itself.  The interference issue is more pronounced in our CP9669 Kits due to the extremely wide calipers but can also impact our CP9661 Kits to a lesser extent. Porsche delivers these cars with the front and rear ARBs set to the middle position.  Potential interference between the brake line fitting and drop links becomes more likely to occur as: The anti-roll bar is adjusted towards the softest setting (the hole closest to the end of the bar) The steering wheel is turned towards full lock The suspension is under full droop (extended as far as possible) To address this clearance issue, AP Racing has developed the following solution: Relocate the caliper hydraulic connection from its current position to the lower bleed screw.  This requires a new Spiegler brake line of a different length with a new banjo bolt design manufactured by Spiegler. The original inlet port in the center of the AP Racing caliper will be closed off with a plug. CP9661 Kit, part# 13.01.10141/13.01.10141-ENP On our CP9661 front caliper kits in the as-delivered configuration (brake line attached to the inlet port in the middle of the caliper), interference between the drop link and the brake line fitting may occur when the ARB is adjusted to the softest setting as you approach full steering lock and full suspension droop.   If you won’t be running the ARB in the softest setting with our CP9661 kit, you should not anticipate any issues, and you should not expect any interference when the ARB is set to the medium or stiff settings.  If you do plan to run your front ARB in the softest setting, we suggest implementing our brake line relocation as described above, which will provide adequate clearance in all ARB settings. CP9669 Kit, part# 13.01.10142-ENP The wider calipers in our CP9669 kits extend further into the wheel well, which creates more potential clearance issues.  With the brake line attached to the center inlet port and the ARB set in the soft or middle settings, there may be interference between the brake line banjo fitting or the caliper body with both the ARB drop links or the ARB itself. With the brake line relocated to the lower bleed screw port, the CP9669 calipers have adequate clearance with the front anti-roll bar end links when they are set in the middle or stiffest positions.  The caliper will not clear the front anti-roll bar adjusted to its softest setting, so the ARB cannot be run in that setting.  Under full droop and full lock, the end of the anti-roll bar itself may make minor contact with the inlet port plug, but the likelihood of putting the components in those positions under normal driving conditions is very low.

AP Racing Radi-CAL 394mm Competition Brake Kit for Porsche GT4 (Front) Fit The Following Cars Porsche 981/718 GT4 (PCCB and Iron Rotors) Complete front AP Racing Radi-CAL Competition Brake Kit for the Porsche Cayman 981/718 GT4. Features AP Racing Radi-CAL 9669 calipers for extreme durability! Clears many popular 19" and 20" track wheels Durable, ventilated stainless steel pistons (no ceramic piston caps to break) with anti-knockback springs Design eliminates the need to remove caliper for pad changes Saves 10 unsprung lbs. vs. OEM iron brakes and very close in weight to the OEM PCCB system Allows for the preservation of pricey OEM brake components Huge array of brake pad options from all major pad manufacturers 394x34mm, 84 vane AP Racing J Hook Discs Every component designed to resist the heat of extended track sessions Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system Includes the AP Racing pad tension kit and disc burning at no additional cost Designed to work with OEM rear brakes or the AP Racing Rear Brake Kit

AP Racing Radi-CAL Competition Brake Kit for Corvette C8 Z51(Rear) Complete Rear AP Racing Radi-CAL Competition Brake Kit for the Chevrolet Corvette C8 Z51 (2020+) Features AP Racing CP9669 Radi-CAL six piston calipers Jewel-like ENP caliper finish is incredibly durable and easy to clean Weighs roughly the same as the OEM Z51 rear brakes, despite more caliper pistons and 28mm larger discs 34mm, 72 vane AP Racing J Hook Discs Every component designed to resist the heat of extended track sessions Pistons sized properly to integrate with OEM master cylinder and ABS system Designed to work with AP Racing front Brake Kits

AP Racing Radi-CAL Competition Brake Kit for Corvette C8 (Front) AP Racing Radi-CAL Competition Front Brake Kit for C8 Corvette Base, Z51 and Z06 (all trims): Saves approximately 9 unsprung lbs. on front end vs. OEM Z06 Iron System Drastically reduced spares/running costs and minimal 6 lb. weight penalty vs. OEM Z07 Carbon Ceramic system Features AP Racing CP9668 Radi-CAL calipers & pads for extreme durability! Clears OEM Z07 20" 5-spoke wheels without a spacer Quick-change spring clips included for quick and easy pad changes Championship-winning 2-piece fully floating 72 vane AP Racing J Hook Discs Every component designed to resist the heat of extended track sessions Ventilated stainless steel pistons with anti-knockback springs and high temperature seals (no dust boots to burn up) Pistons sized properly to allow for integration with OEM master cylinder and ABS system Designed to work with OEM rear brakes or AP Racing rear BBKs

AP Racing Radi-CAL Competition 378mm Brake Kit for Corvette C8 Z06/Z07(Rear) AP Racing Radi-CAL Competition Front Brake Kit for C8 Corvette Z06 (all trims) Complete Rear AP Racing Radi-CAL Competition Brake Kit for the Chevrolet Corvette C8 Z06 / Z07 (2023+) Features AP Racing CP9669 Radi-CAL six piston calipers Jewel-like ENP caliper finish is incredibly durable and easy to clean Clears OEM Z07 5-spoke rear wheel without a spacer Saves approximately 10 unsprung lbs. from rear axle vs. OEM Z06 Iron brakes, despite more pistons in caliper 378x34mm, 72 vane AP Racing J Hook Discs Every component designed to resist the heat of extended track sessions Pistons sized properly to integrate with OEM master cylinder and ABS system Designed to work with OEM or AP Racing by Essex front Competition Brake Kits