The Shimano Center Lock RT-CL800 Ice-Tech Freeza disc, thanks to the special focus on reducing thermal deformation of the rotor, o is quieter than ever, without sacrificing lightness or heat dissipation.

• Quieter than ever, but with superb, consistent braking performance on any long, steep descent, thanks to excellent heat dissipation.
• The new arm shape is more robust and offers quieter operation.
• Disc brake rotor size: 203 mm.
  
• With locking ring (External clamping).