AP Radi-CAL Brakes for the Porsche 718 GTS 4.0 Boxster and Cayman


A generous client recently allowed us to borrow his GTS 4.0 for a brake measuring session, and we are pleased to announce that we now have a full array of AP Racing and Ferodo Racing brake components for this car! You can see our full brake menu here: https://www.essexparts.com/my-vehicle/2022/Porsche...

Products include:

  • Complete AP Racing by Essex Radi-CAL front and rear brake system
  • AP Racing by Essex 2-piece front and rear J Hook Discs (fit with OEM calipers)
  • Front (FCP4664) and rear (FCP4424) Ferodo Racing pads in various compounds for OEM calipers
  • Spiegler Stainless Steel Brake Lines front and rear (in process and available shortly)
  • Same core design as the AP Racing Radi-CAL brakes on the new 992 GT3 R

A few highlights of our complete Radi-CAL Kit:

  • Removes 20+ lbs. of unsprung weight vs. OEM iron brakes, despite an increase in disc size at both ends of car!
  • Durable, lightweight AP Racing J Hook Discs, 372x34mm front (OEM=350x34mm) and 340x28mm rear (OEM=330x28mm)
  • Removable AP Racing caliper bridge allows for quick brake pad removal without removing the caliper (unlike stock caliper with fixed bridge)
  • Compact AP Racing calipers allow for small diameter, lightweight track wheels, despite increase in disc sizes
  • Retains full parking brake functionality

Front Caliper Comparison, OEM vs. AP Racing CP9661 Radi-CAL

OEM Front Caliper Weight

AP Racing CP9661 Radi-CAL Weight

OEM Rear Caliper Weight

AP Racing CP9450 Radi-CAL Weight

Rear Wheel Mounted

Rear Wheel Spoke Clearance

Front AP Racing 2-Piece J Hook- Works with OEM calipers

Complete AP Racing CP9661 Radi-CAL Competition Front Kit


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