SHIMANO RT-CL800 | ULTEGRA Grade Disc Brake Rotor with Enhanced Heat Dissipation and Silence

Consistent braking power even on long descents.

The SHIMANO "RT-CL800" is a centerlock disc brake rotor adopted in the ULTEGRA R8100 series.

Featuring SHIMANO's unique ICE TECHNOLOGIES FREEZA, it suppresses brake temperature rise through high heat dissipation. This maintains stable braking during long descents and high-load rides, reducing fade.

Furthermore, a newly designed arm shape increases rotor rigidity while suppressing vibration and resonance. This improves quietness compared to conventional models, providing a more comfortable and reassuring riding experience.

This high-performance disc rotor is suitable for a wide range of categories, including road bikes, gravel roads, and endurance roads.

Features

• Disc brake rotor adopted in the ULTEGRA R8100 series
• Excellent heat dissipation performance with ICE TECHNOLOGIES FREEZA
• Maintains stable braking performance even on long descents
• High-rigidity design with a newly designed arm shape
• High quietness that suppresses rotor squeal and vibration
• Centerlock mounting for easy and secure attachment
• Compatible with a wide range of bikes from road to gravel
• Available in a wide range of sizes from 140mm to 203mm

SPEC

• Model: RT-CL800
• Series: ULTEGRA R8100
• Type: Disc brake rotor
• Mounting method: Centerlock
• Technology: ICE TECHNOLOGIES FREEZA
• Compatible pad shape: Narrow
• Size lineup: 140mm / 160mm / 180mm / 203mm
• Average weight: 97g (140mm), 114g (160mm), 139g (180mm), 169g (203mm)

If you want to fully utilize your disc brake's performance, choosing the right rotor is crucial.

The RT-CL800 has high heat dissipation, which gives the impression of stable braking power even on long descents or rides with luggage. You'll likely feel the benefits particularly in summer or during mountain rides.

Another attractive feature is the low noise and vibration during braking, contributing to overall riding comfort.

Inheriting the same design philosophy as the DURA-ACE grade RT-CL900, this model is a highly recommended standard rotor that offers an excellent balance of performance and cost.