AP Racing by Essex 2-piece Competition J Hook Disc Pair (Rear 350x28mm) for Porsche rear

AP Racing by Essex 2-piece Competition J Hook disc pair for rear 997 GT3 & 997 Turbo 13.78" x 1.10" (350mm x 28mm) 72 Vane, D66 radial depth Huge increase in airflow, cooling capacity, and durability vs. OEM Designed for: club racing, time trial, autocross, HPDE Works with OEM calipers, no modifications required 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 imagine the disc is being heated on the track. As the disc expands, the outer edges of the disc are pulling away from the center of the disc, but there are no built-in provisions to allow for that expansion. The edges of the disc theref