AP Racing by Essex 2-piece Competition J Hook Disc Pair (Rear 350x28mm) - Porsche 718 GTS 4.0 Boxster and CaymanAP Racing by Essex 2 piece Competition J Hook disc pair for rear of Porsche 718 GTS 4. 0 Boxster and Cayman 13. 78" x 1. 10" (350mm x 28mm) 72 Vane, D60 radial depth Virtually the same weight as stock disc, despite being 20mm larger Requires the use of Ferodo FCP4713 pads pads with proper radial depth of 60mm Pad Compound Options: DS2500, DS1. 11, DS3. 12 Works with OEM calipers using the included caliper spacers and longer bolts Huge increase in