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Shimano Ultegra RT-CL800 Internal Lockring Centre Lock Disc Rotor

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ColourSilver / Black

Shimano is a Japanese multinational corporation synonymous with cycling. Constituting 50% of sales in the global cycling market, and with their parts spanning across all types of bicycle, it is a highly reputable business that is constantly developing and innovating its assets.

Shimano Ultegra RT-CL800 Internal Lockring Centre Lock Disc Rotor
Shimano Ultegra RT-CL800 Internal Lockring Centre Lock Disc Rotor Shimano Ultegra RT-CL800 Internal Lockring Centre Lock Disc Rotor

With 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.


3D Aluminium Carrier

Optimized 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.

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.

Benefits and features:

  • Lightweight clad rotors with heat dissipating paint on exposed aluminium layer segments provide superior cooling, consistent brake performance, and lighter operation under all conditions
  • Clad brake pads with Aluminium/Stainless fins support rapid heat dissipation which helps reduce maintenance, provide longer pad life, and create less brake fade and noise

Ice Technologies and Freeza provide consistent braking performance with longer pad life, less brake fade and noise.

The lightweight and highly efficient three-layer sandwich structure of stainless steel–aluminium–stainless steel enhances heat dissipation.

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).


  • Ultegra grade RT-CL800 Ice Tech rotors give excellent performance made from a stainless steel / alloy 3-layer sandwich construction that manages heat while riding
  • 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 degrees C. When used with Ice Tech pads surface temperatures can drop from around 400 to 300 degrees C, this provides great improvements in performance all round
  • Ice Tech rotors achieve long pad life, less noise and less fade due to improved heat dispersion
  • Using the proven Shimano Centre Lock system for excellent rigidity and security with an easy set-up
  • Rotor contact surface has been developed for excellent pad clearing and cooling which increases pad performance and life
  • Large forged alloy spider supports rotor surface, increasing rigidity and reducing weight
  • Comes complete with alloy lockring

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