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The Shimano RT-CL900 brake disc from the Dura-Ace group offers excellent heat dissipation, quiet operation, and high braking performance thanks to its new reinforced arm shape and Ice Technologies Freeza technology.

Basic data

Brand Shimano
Country of origin of the brand Japan
Sport Bicycles
Gender Not applicable
Season Year-round
Leading colour Silver
Model/product code RT-CL900 IRTCL900LE
Code 2000107865

Product details

Mounting Centerlock
Brake disc size (front/rear) 203 mm
Weight 169 g
Technologies Center Lock, Ice Technologies FREEZA

Warnings and producer's data

Producer Shimano Inc. | 3-77 Oimatsu-cho, Sakai-ku, Sakai City, Osaka 590-8577, Japonia | ccpa@shimano.com. | SHIMANO POLSKA Sp. Z o.o. | Gutenberga 9 62-023 Żerniki Polska | infopoland@shimano-eu.com

Shimano Dura-Ace RT-CL900 Ice Technologies Freeza 203mm brake disc (IRTCL900LE)

The Shimano Dura-Ace RT-CL900 Ice Technologies Freeza 203mm brake disc sets a new standard for precision and control in the high-performance bike component segment. With the integration of innovative solutions, it ensures effective heat dissipation and reliable performance during intense riding on long descents or in challenging race conditions.

Diameter 203 mm for demanding applications

The 203 mm diameter makes the Shimano Dura-Ace RT-CL900 a perfect choice for riding in conditions that require maximum braking effectiveness. This size provides a larger contact area between the pads and the disc, significantly increasing braking efficiency during steep descents and under heavy loads. This solution will be especially appreciated by competitors expecting the best parameters in the most challenging situations on the course.

Shimano Dura-Ace RT-CL900 Ice Technologies Freeza 203mm brake disc - features:

  • Ice Technologies FREEZA for effective heat dissipation during braking;
  • Multi-layer construction of the disc ensuring rapid temperature dissipation;
  • Center Lock mounting enabling quick and precise installation;
  • Compatibility with modern Shimano braking systems;
  • 203 mm diameter designed for intense riding and high speeds;
  • Optimized stiffness of the construction for reliable performance under load;
  • Reduction of fading effects thanks to advanced thermal technology;
  • Ideal for professional use on racing and mountain bikes;
  • Stable braking force even during prolonged descents;
  • Modern design tailored to the needs of sport-oriented users.
Center Lock
This is Shimano's patented brake disc mounting system consisting of splines and locking rings. Secure spline mounting increases precision and rigidity while improving braking performance.
Ice Technologies FREEZA
Shimano's ICE TECHNOLOGIES FREEZA discs feature an aluminium layer and heat sinks that effectively reduce temperatures by 100°C compared to standard discs and by 40°C compared to previous models. A special varnish on the heat sinks further reduces heat by 10°C, increasing cooling efficiency.
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Shimano Dura-Ace RT-CL900 Ice Technologies Freeza 203mm brake disc

Shimano Dura-Ace RT-CL900 Ice Technologies Freeza 203mm brake disc

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Shimano Dura-Ace RT-CL900 Ice Technologies Freeza 203mm brake disc

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