Price is per pair (2 off). suitable only for the 4 pot supra brakes8 SLOTS. Project Mu, Japans premier Brake Performance manufacturer, is proud to offer their SCR high performance stock replacement rotors for most late model Japanese vehicles. Project Mu SCR rotors are available as front and rear replacements including vehicles with the factory Brembo calipers. They are manufactured from the factory featuring a slotted and dimpled surface to facilitate better pad wear and maximize cooling and braking performance. SCR rotors also feature a specially designed internal vane to improve heat dissipation from the rotors. SCR rotors are developed from super tough FC Cast Iron Material and are heat-treated for reliability, durability and thermal stability under aggressive driving. To maximize street and sports driving, Project Mu is the number one choice in braking technology and performance.