StopTech Slotted Sport Brake Rotor (Cryo-Treated) 126.44174CSR. This is a high-performance front right brake rotor designed for Lexus GX460 and Toyota 4Runner. It features a patented cryogenic treatment that aligns the molecular structure of the steel, significantly increasing durability and resistance to thermal warping. The slotted surface helps clear brake dust and gases, ensuring consistent friction and improved bite. Black e-coating provides superior corrosion resistance for the non-friction surfaces. Sold individually as a front right rotor. Compatible Part Numbers: StopTech 126.44174CSR, OEM 43512-60191, OEM 43512-60190.