Shimano RT-CL900 160mm Center Lock Disc Brake Rotor | DURA-ACE | ICE TECHNOLOGIES FREEZA | Internal Lock Ring
Shimano RT-CL900 160mm Center Lock Disc Brake Rotor | DURA-ACE
Shimano's flagship road disc brake rotor engineered for maximum braking consistency, outstanding cooling, and whisper-quiet performance.
The Shimano RT-CL900 is the highest-performance disc brake rotor in Shimano's lineup, developed alongside the latest DURA-ACE groupset to deliver race-ready braking for road, gravel, and endurance cyclists. Featuring Shimano's most advanced heat management technologies, the RT-CL900 provides exceptional stopping power while dramatically reducing brake noise during demanding rides.
At its core is ICE TECHNOLOGIES FREEZA, a three-layer stainless steel and aluminum rotor construction that rapidly dissipates heat generated during braking. Combined with Shimano's advanced heat dissipation coating, the rotor maintains lower operating temperatures to minimize brake fade, extend pad life, and provide consistent braking performance on long mountain descents.
A redesigned reinforced rotor arm increases stiffness while reducing heat-induced deformation and vibration. The result is smoother, quieter braking with excellent modulation and control, even under prolonged heavy braking.
This version includes a 160mm Center Lock rotor along with a Shimano Center Lock internal serration lock ring for installation on compatible hubs.
Key Features
- Shimano DURA-ACE RT-CL900 premium disc brake rotor
- 160mm rotor diameter
- Center Lock mounting system
- ICE TECHNOLOGIES FREEZA cooling construction
- Heat dissipation coating improves thermal performance
- Reinforced rotor arm reduces vibration and brake noise
- Outstanding braking consistency on long descents
- Lightweight race-ready construction
- Includes Center Lock internal serration lock ring
Why Riders Choose the RT-CL900
- Shimano's flagship road disc brake rotor
- Exceptional cooling reduces brake fade
- Noticeably quieter braking than previous Shimano rotors
- Excellent modulation and braking control
- Ideal for aggressive road riding, gravel racing, and mountain descents
- Premium lightweight construction without sacrificing durability
Technical Specifications
- Brand: Shimano
- Series: DURA-ACE
- Model: RT-CL900
- Rotor Diameter: 160mm
- Mounting Standard: Center Lock
- Cooling Technology: ICE TECHNOLOGIES FREEZA
- Heat Management: Advanced Heat Dissipation Coating
- Rotor Construction: Stainless Steel / Aluminum / Stainless Steel
- Included Lock Ring: Internal Serration Center Lock Lock Ring
- Brake Pad Compatibility: Resin and Metallic (Sintered)
- Application: Hydraulic and Mechanical Disc Brake Systems
- Manufacturer Product Code: IRTCL900SI
- UPC: 192790232768
Ideal For
- Road racing
- Endurance road cycling
- Gravel racing
- All-road bikes
- Cyclocross
- Performance e-road bikes
- Long mountain descents
- Premium lightweight bike builds
Before You Buy
- This listing is for one (1) 160mm Center Lock disc brake rotor.
- Compatible only with Center Lock hubs.
- Not compatible with traditional 6-bolt hub mounting systems.
- An internal serration Center Lock lock ring is included.
- Compatible with both resin and metallic brake pads.
- Verify that your frame, fork, brake caliper, and adapter are designed for a 160mm rotor before ordering.
- The included internal lock ring installs using a Shimano cassette lockring tool.
The Shimano RT-CL900 160mm Disc Brake Rotor is built for cyclists who demand the very best braking performance available. With ICE TECHNOLOGIES FREEZA cooling, advanced heat management, and Shimano's quietest rotor design to date, it delivers elite-level stopping power for road racers, gravel riders, and endurance cyclists alike.