AP Racing by Essex 2-piece Competition J Hook Disc Pair (Rear 350x28mm) - Porsche 718 GTS 4.0 Boxster and Cayman

AP 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 airflow, cooling capacity, and durability vs. OEM Designed for: club racing, time trial, autocross, HPDE Ultralight, fully floating, anodized billet aluminum hat with float control/anti-rattle clips Patented Disc Burnishing/Bedding Service Pair/$150 Two-piece Floating Design with Aluminum Hat As is the case with most metal, iron brake discs grow substantially when heated. As it is heated, a disc expands radially, increasing in diameter and circumference. One-piece disc designs run into problems when this occurs. Look at the picture below and