Shimano XTR M900 Ice Tech Freeze CL Disc RotorUpdated and enhanced with latest performance-enhancing technologies, the XTR M900 Ice Tech Freeze Centre Lock (CL) mountain bike (MTB) disc brake rotor sits at the very top of Shimano’s range, giving you-market-leading stopping power. Bringing you consistent speed control on long descents and in all conditions, you’ll be able to raise the limits of your riding ability. Efficient Heat Dispersing Brake DiscThe Ice Tech Freeza construction sheds heat faster and more efficiently than ever before, ensuring that your brakes feel the same coming into the first corner as they do when exiting the final rock garden at the bottom of the mountain.Features: Material: Rotor: Stainless Steel, Aluminium; Rotor: Aluminium Mount Type: Centre Lock (CL) Use: Cross Country, Marathon, Trail Brake Compatibility: All Shimano XTR and XT hydraulic disc brakes Brake Pad Compatibility: Resin, Metal Ice Technology Freeza (Radiator Fin): Yes Weight: 149g (203mm), 133g (180mm), 108g (160mm), 90g (140mm) Manufacturer’s Part Numbers:140mm: RTMT900SS 160mm: RTMT900S180mm: RTMT900M203mm: RTMT900LTechnologies:IceTech Freeza: Ice Technologies combined with Freeza disc brake rotor construction rapidly dissipates heat for more consistent braking performance in extreme conditions, longer pad life, and less brake fade and noiseCentre Lock: The Centre Lock system makes an easy rotor installation possible with spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. Also, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiencyA 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.