Shimano RT-CL900 ME Disc Brake Rotor - 180mm Centerlock Lockring Included

Shimano Dura-Ace RT-CL900 Center Lock Disc Brake Rotor

180mm | Center Lock | Two-Piece | Lockring Included

The Shimano Dura-Ace RT-CL900 Disc Brake Rotor is Shimano's flagship road rotor, engineered to deliver exceptionally quiet, powerful, and consistent braking performance in every riding condition. Featuring advanced heat management, a lightweight two-piece construction, and a reinforced arm design, the RT-CL900 maintains dependable braking control on long descents while minimizing vibration and brake noise.

Designed for elite road performance, this premium Dura-Ace rotor offers race-proven stopping power without compromising weight or reliability.

Flagship Dura-Ace Braking Performance

Built for Shimano's top-tier Dura-Ace groupset, the RT-CL900 delivers confident braking for riders who demand maximum performance.

Benefits include:

• Powerful, consistent braking
• Stable braking feel under heavy loads
• Race-ready performance
• Excellent control in all weather conditions

Perfect for road racing, endurance riding, and high-performance gravel applications.

Advanced Heat Management

The RT-CL900 is engineered to efficiently dissipate heat during prolonged braking, helping maintain braking consistency on steep and technical descents.

Features include:

• Excellent heat dissipation
• Reduced brake fade
• Stable braking performance
• Reliable stopping power on long descents

Heat Dissipation Paint

Shimano's specialized heat dissipation paint further improves cooling efficiency by helping reduce rotor operating temperatures during aggressive braking.

Benefits include:

• Enhanced thermal management
• More consistent braking feel
• Improved long-descent performance
• Increased rider confidence

Quiet, Stable Operation

A reinforced rotor arm design minimizes unwanted vibration while maintaining low weight.

Advantages include:

• Reduced brake noise
• Less vibration
• Smooth, predictable braking
• Quiet operation across varied terrain

Lightweight Two-Piece Construction

The RT-CL900 combines a stainless-steel braking surface with an aluminum carrier to optimize weight, stiffness, and cooling.

Benefits include:

• Lightweight construction
• Excellent strength
• Improved heat management
• Consistent braking performance

Easy Center Lock Installation

Compatible with Shimano Center Lock hubs, the RT-CL900 installs quickly and securely.

Includes:

• Shimano RT-CL900 180mm Rotor
• Internal-serration Center Lock lockring

Specifications

• Brand: Shimano
• Series: Dura-Ace
• Model: RT-CL900
• MPN: IRTCL900ME
• Rotor Diameter: 180mm
• Mount Type: Center Lock
• Rotor Construction: Two-Piece
• Heat Management: Advanced Cooling with Heat Dissipation Paint
• Lockring Included: Yes (Internal Serration)
• Brake Pad Compatibility: Resin, Metallic & Semi-Metallic (All Pad Compounds)

Compatibility

Compatible with:

• Shimano Center Lock hubs
• Road bikes
• Gravel bikes
• Cyclocross bikes
• Performance bikes using 160mm Center Lock rotors

Compatible with:

• Resin brake pads
• Metallic (Sintered) brake pads
• Semi-metallic brake pads

In the Box

• Shimano Dura-Ace RT-CL900 180mm Disc Brake Rotor
• Internal Serration Center Lock Lockring

Key Features

✔ Genuine Shimano Dura-Ace RT-CL900 rotor

✔ 180mm Center Lock mounting

✔ Premium lightweight two-piece construction

✔ Advanced heat dissipation for consistent braking

✔ Heat dissipation paint enhances cooling performance

✔ Reinforced arm design reduces vibration and brake noise

✔ Compatible with all brake pad compounds

✔ Internal-serration lockring included

Ideal For

✔ Road racing

✔ Endurance road riding

✔ Gravel riding

✔ Climbing and mountain descents

✔ Performance cycling

✔ Riders seeking Shimano's flagship braking performance

Why Choose the Shimano Dura-Ace RT-CL900?

• Shimano's premier Dura-Ace disc brake rotor for elite road performance
• Outstanding heat management maintains braking consistency on demanding descents
• Heat dissipation paint improves cooling efficiency
• Reinforced arm design delivers quieter braking with reduced vibration
• Lightweight two-piece construction balances stiffness, cooling, and weight
• Genuine Shimano quality trusted by professional and enthusiast cyclists worldwide

The Shimano Dura-Ace RT-CL900 Center Lock Disc Brake Rotor is engineered for riders who demand the highest level of braking performance. Combining advanced cooling technology, lightweight two-piece construction, and quiet operation, it delivers smooth, reliable stopping power whether you're racing, descending mountain passes, or pushing your limits on every ride.