SHIMANO RT-CL800 Lock Interno With Magnet brake disc

A Focus On Decreasing Disc Brake Rotor Heat Deformation, The Result Of The New Disc Brake Rotor Is Quieter Than Ever Brake Performance Without Sacrificing Weight Or Heat Dissipation. Features: - Quieter Than Ever, But With Superb, Consistent Braking Performance On Any Long, Steep Descents Thanks To Excellent Heat Dissipation - The New Arm Shape Is More Robust, Leading To Quieter Operation Specifications: - Series: Ultegra R8100 Series - Average Weight: 114 (160 Mm) 96 (140 Mm) - Ice Technologies: Yes - Ice Technologies Freeza: Yes - Center Lock: Yes - Outside Diameter_140 Mm: Yes - Outside Diameter_160 Mm: Yes - Pad Lining Shape Compatibility_Narrow: Yes Technology: Ice Technologies 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 Noise. - Lightweight Clad Rotors With Heat Dissipating Paint On Exposed Aluminum Layer Segments Provide Superior Cooling, Consistent Brake Performance, And Lighter Operation Under All Conditions. - Clad Brake Rotors With Aluminum/Stainless Fins Support Rapid Heat Dissipation Which Helps Reduce Maintenance, Provide Longer Pad Life, And Create Less Brake Fade And Noise. Center Lock: - The Center 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. In Addition, The Secure Fixing By The Spline Mount Enhances Precision And Rigidity While Improving Braking Efficiency.