Shimano Dura-Ace RT-CL900 – 140 mm Center Lock Disc Brake Rotor
The Shimano Dura-Ace RT-CL900 is a high-performance 140 mm disc brake rotor designed for road cyclists who demand consistent braking, efficient heat management and dependable control.
Featuring Shimano ICE TECHNOLOGIES FREEZA construction and an updated rotor design, it helps reduce heat buildup and unwanted noise during demanding braking conditions.
Key Features
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140 mm diameter: Compact rotor size for compatible road disc brake systems.
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Center Lock mounting: Shimano spline-based installation for compatible hubs.
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ICE TECHNOLOGIES FREEZA: Multi-layer rotor construction with an aluminum core and cooling fins for improved heat dissipation.
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Improved heat management: Helps maintain consistent braking performance on long descents.
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Quiet braking design: Updated construction helps reduce rotor deformation and brake noise caused by heat.
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Dura-Ace performance: Premium Shimano road component designed for demanding riding.
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Metal and resin pad compatibility: Suitable for compatible Shimano brake pads of either compound.
Technical Specifications
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Brand: Shimano
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Series: Dura-Ace R9200
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Model: RT-CL900
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Product type: Disc brake rotor
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Diameter: 140 mm
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Mounting system: Shimano Center Lock
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Technology: ICE TECHNOLOGIES FREEZA
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Braking surface: Stainless steel
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Rotor construction: Stainless steel and aluminum multilayer structure
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Cooling fins: Aluminum
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Brake pad compatibility: Metal and resin, subject to caliper compatibility
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Application: Road cycling
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Lockring: Center Lock lockring; verify included hardware and hub axle compatibility
Consistent Braking with ICE TECHNOLOGIES FREEZA
The RT-CL900 uses a multilayer structure combining stainless steel braking surfaces with an aluminum core. Extended aluminum cooling fins help dissipate heat generated during braking.
This construction supports more consistent braking performance during long descents and repeated braking efforts.
Reduced Noise and Improved Stability
Shimano's updated rotor design improves thermal stability, helping reduce unwanted vibration and noise during braking.
The result is a refined braking feel for performance road riding.
Center Lock Installation
The Center Lock interface allows the rotor to be secured to a compatible hub using a lockring.
Before installation, confirm:
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Hub compatibility with Shimano Center Lock rotors.
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Bicycle and fork or frame approval for a 140 mm rotor.
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Brake caliper and brake pad compatibility.
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Correct lockring type for the hub's axle configuration.
The RT-CL900 is not directly compatible with 6-bolt rotor mounts.
Installation and Maintenance
Use the appropriate Center Lock installation tool and follow Shimano's recommended lockring tightening torque.
Keep the braking surface free from oil and grease. Inspect rotor thickness, wear and condition according to Shimano's service instructions.
Note: This product is the Shimano Dura-Ace RT-CL900 disc brake rotor in the 140 mm diameter.
