StopTech Sport Rotors are also available with an optional cryogenic treatment. Although cryogenic treatment is invisible to the naked eye; 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; from brake rotors and engine parts to machine tools and gear sets. All new StopTech Sport Rotors may be ordered with cryogenic treatment for an additional fee.. Symmetric vane; split-core castings for uniform heat distribution. Black E-Coat anti-corrosive coating protects much better than competitors spray paint. Double disc ground friction surface for optimal performance and service life. Symmetric vane; split-core castings for uniform heat distribution. Black anti-corrosive paint protects much better than competitors spray paint. Double disc ground friction surface for optimal performance and serviced life.. 2004 - 2007 BMW 525i, 2006 - 2007 BMW 525xi, 2008 - 2010 BMW 528i, 2009 - 2010 BMW 528i xDrive, 2008 - 2008 BMW 528xi, 2004 - 2007 BMW 530i, 2006 - 2007 BMW 530xi, 2009 - 2010 BMW 535i xDrive, 2008 - 2008 BMW 535xi. This extra process provides better rotor balance and creates a cleaner; more finished looking component; In addition; Rotors are inspected for balance and mill-corrected to a tolerance of less than 2oz. Sport Drilled Rotor; StopTech; StopTech Rotor; Stop Tech Rotor; Stop-Tech Sport Rotor; StopTech Sport Rotor; StopTech Brake Rotor; Stoptech Drilled/Slotted Rotor. StopTech 09-10 BMW 535i xDrive SportStop Cryo Cross Drilled Front Right Rotor. StopTech Sport Cryo Cross Drilled Brake Rotor; Front Right. Black E-Coated Non-Friction - Corrosion Protection. Double Disk Ground For Consistent Friction Surface. Superior Resistance To Cracks From Thermal Stress. Drilled/Slotted Helps Evacuate Gasses/Dust/Heat. Directional Curve Vane Designs On Selected Apps. Power Alloy Is Descendant Of Patented AeroRotor. Increased Initial bite and Wet Weather Response. Sport Cryo Drilled Brake Rotor; Front Right. Sport Cryo Cross Drilled Brake Rotor. Stoptech Drilled/Slotted Rotor. Direct OE Replacement. Sportstop Cryo Rotor. Disc Brake Rotor

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