StopTech (127.44118CL) Brake Rotor: Automotive. Buy StopTech (127.44118CL) Brake Rotor: Rotors - ✓ FREE DELIVERY possible on eligible purchases. Disc Brake Rotor Sport Rotor Sport Rotor; Drilled And Slotted; Cryo XDrilled; Fr Lt;.55 in. Dia.; .77 in. Height;SPECIFICATIONS:Position: Front LeftStyle: Drilled And SlottedWARNING CA Proposition 65: YesWARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive HarmFEATURES:Drilled/Slotted s Evacuate Gasses/Dust/HeatDirectional Curve Vane Designs On Selected AppsPower Alloy Is Descendant Of Patented AeroRotorBlack E-Coated Non-Friction - Corrosion ProtectionIncreased Initial bite and Wet Weather ResponseSuperior Resistance To Cracks From Thermal StressDouble Disk Ground For Consistent Friction SurfaceDirect OE Replacement Sport Rotors are also available with an optional cryogenic treatment. Although cryogenic treatment is invisible to the naked eye, from brake rotors and engine parts to machine tools and gear sets. All new Sport Rotors may be ordered with cryogenic treatment for an additional fee. is the high performance and racing brand from Centric Parts - a leading innovator of world class brake components and systems for production-based race cars and high performance vehicles on the street and track. was the first to offer balanced brake upgrades for production cars and remains the worldwide leader with over 700 platform offerings that dramatically improve overall braking performance. 。 。 。. many fleet customers are sold on its ability to extend the service life of the brake rotor. Deep cryogenic treatment is a one-time process that permanently improves the performance and wear characteristics of metal components.