Engineered at the bleeding edge of performance, the Shimano DURA-ACE SM-RT900 disc brake rotor is the undisputed benchmark for professional road racing and elite-level cycling. Developed with input from WorldTour riders and built for podium finishes, this rotor is a masterpiece of heat management, lightweight construction, and absolute braking precision.

At its core is Shimano’s revolutionary ICE TECHNOLOGIES FREEZA innovation — a multi-layer rotor construction designed to rapidly dissipate heat, minimize brake fade, and preserve peak performance in even the most demanding race conditions. From alpine descents to city circuits, this rotor ensures predictable, powerful braking with every lever pull.

🔥 ICE TECHNOLOGIES FREEZA: Racing-Level Thermal Management

The rotor’s advanced 3-layer structure — stainless steel outer layers bonded to an aluminum core — allows for drastically improved heat dissipation. The integrated radiator fins (FREEZA) further accelerate cooling, ensuring your braking system remains stable under sustained use.

Key Benefits:

• Reduces surface temperature by up to 100°C

• Prolongs brake pad life

• Virtually eliminates fade in long descents

• Maintains braking consistency lap after lap

Whether it’s the punishing slopes of Mont Ventoux or the explosive corners of a criterium circuit, the SM-RT900 delivers the composure and power you need.

⚙️ CENTER LOCK Interface: Precision Meets Convenience

Featuring Shimano’s signature CENTER LOCK mounting system, the SM-RT900 installs effortlessly with a spline-style interface and lock ring. It ensures perfect rotor alignment, reduced vibration, and a more stable braking platform.

Advantages:

• Faster, tool-friendly installation

• Superior stiffness for improved braking response

• Clean, race-ready appearance

• Compatible with all Shimano CENTER LOCK hubs

🚴‍♂️ Built for Pure Speed and Control

Every gram shaved from your components counts — which is why the SM-RT900 is lightweight without compromise. Available in both 160 mm and 140 mm diameters, this rotor allows racers and performance riders to fine-tune their setup based on riding style and terrain. It's also the rotor of choice for riders using Shimano DURA-ACE R9100/R9200 series hydraulic disc brakes.

📐 Specifications

• Model: Shimano SM-RT900

• Sizes: 140 mm / 160 mm

• Mount: CENTER LOCK™

• Technology: ICE TECHNOLOGIES FREEZA

• Construction: Stainless steel – Aluminum – Stainless steel (3-layer sandwich)

• Intended Use: Road Racing, Time Trial, Triathlon, High-Performance Road

🔍 Key Performance Features

✅ Pro-grade heat dissipation for consistent braking
✅ Minimal fade in prolonged descents
✅ Ultralight construction to keep your build race-ready
✅ CENTER LOCK design for secure, fast mounting
✅ Silent, vibration-free braking feel
✅ Designed to work optimally with Shimano’s resin pads and hydraulic disc systems

🏆 Who It's For

The SM-RT900 is built for road cyclists who demand absolute control — whether sprinting to the line, descending at 90km/h, or carving switchbacks in the Alps. It is ideal for:

• WorldTour professionals

• Triathletes and time trialists

• Performance-focused amateur racers

• Weight-conscious climbers