Our caliper adapter was designed specifically for letting our Z33, 350Z knuckle accept sought after Z34, 370Z big front OEM brakes, which are produced produced by Akebono. They are unique compared to other offerings on the market because there is no additional CNC spacer and long hardware, instead we choose to grind the OEM knuckle to accept this simplified design as shown in the gallery photos. Our new production forged aluminum knuckles have the necessary clearancing for this simplified bracket already done by the factory before the gold anodizing is applied. Sold in pairs with high strength hardware included.