AP Racing J Hook Competition Disc Replacement Ring (340x28mm)

13.39" x1.10" (340mm x 28mm) 48 Vane, Heavy duty J Hook Iron Racing Brake Disc Weighs 11.6 lbs. AP Racing P/N right: CP6565-228GA AP Racing P/N left: CP6565-229GA Essex P/N right: 13.05.10072 Essex P/N left: 13.05.10073 Patented Disc Burnishing/Bedding Service Single/$75 Torque specs for this disc and hardware assembly= 124 lb-in Replacement hardware (not included with ring) AP Racing J Hook discs are the epitome of endurance racing components. They will hold up extremely well to any abuse you plan to throw at them. These discs have been proven time and again in professional racing, winning many races and even championships (ALMS, Rolex, Grand Am, etc.) Internal Vane Quantity and Quality The internal vane design on AP J Hook discs is quite a bit different vs. OEM-style discs and other brands of aftermarket discs. Many OEM discs feature a pillar vane design, which can be thought of as a group of posts or pillars connecting the two disc halves together (see pic below). The pillars a