Shimano Dura-Ace RT-CL900 External Locking Disc Rotor
| Brand | Shimano |
|---|---|
| Colour | Silver / Black |
Shimano XTR / Dura Ace level RT-CL900 Ice Tech rotors providing consistent braking performance through energy control, using revolutionary stainless steel / alloy 3-layer sandwich construction that manages heat while riding.
Technology
3D Aluminium Carrier
Optimised 3D-shaped aluminium carrier is designed purposefully in every single dimension and achieves lightweight and superb heat distortion resistance.
This prevents the entire rotor from deforming due to heat and reduces rubbing noise while riding.
CentreLock
The CentreLock 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.
- Light weight
- Centre Lock compatible hub has only spline mount and a lock ring. This means the lightweight of hub and rotor compared to 6-bolt mount system
- Lock ring rotor mounting system
- Allows easier and faster rotor installation. Easy maintenance
- Secure fixing by spline mount
- Improves braking efficiency
Ice Technologies Freeza
Ice Technologies Freeza rotors utilize the 3-layer stainless steel-aluminium-stainless steel sandwich structure to reduce heat buildup. The inner aluminium layer extends inward with a wide exposed radiator fin that boosts its cooling capabilities.
Stay Cool. Keep Quiet. Stop Faster.
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.
Aluminium radiator fins boost cooling capabilities to enhance braking performance
Ice Technologies Freeza rotors feature an extended inner aluminium layer with wide, exposed radiator fins that boost cooling capabilities.
Shimano Ice Technologies Freeza rotors offer an impressive 100°C (212°F) reduction in heat build-up compared to standard stainless-steel rotors and a 40℃ (104°F) reduction in heat buildup compared to Shimano's Ice Technology rotors. Shimano's premium rotors also feature a special heat dissipation paint on the fins that can further reduce heat buildup by 10℃ (50F°).
Comparison of heat dissipation or cooling performance:
Up to 140°C reduction in heat (vs stainless steel disc brake rotor). Reduce more 10°C by high heat dissipation paint (equipped: SM-RT900 and RT-MT900).
Features
- The clad steel / alloy / steel rotor construction allows heat generated from braking to radiate quickly through the aluminium core achieving surface temperature drops of around 50°C. When used with Ice Tech pads surface temperatures can drop from around 400 to 300°C, this provides great improvements in performance all round
- Freeza rotors allow the alloy core to extend out from the braking surface as a fin to providing added cooling
- Ice Tech rotors achieve long pad life, less noise and less fade due to improved heat dispersion
- Rotors are durable lightweight and rigid, using the proven Shimano Centre Lock system giving increased strength and security with an easy set-up
- Precision cut braking surface improves pad clearing in muddy conditions while aiding cooling under high load
- Large alloy spider is a highly rigid and lightweight support for the rotor surface
- Super polished braking surface gives excellent braking performance
- Rotors come in sizing 140mm, 160mm, 180mm and 203mm, lockring spline options are available either internal, external or internal with integrated magnet depending on the application required
