The Shimano Deore SM-RT64 203mm Center Lock Disc Brake Rotor is a heavy-duty, maximum-power mountain and e-bike component engineered for aggressive gravity riding, technical downhill racing, and loaded cargo use.

Product Overview

The Shimano Deore SM-RT64 in its 203mm footprint offers significantly higher mechanical leverage and thermal mass compared to smaller sizes. This larger surface area helps to drastically reduce brake fade on steep, prolonged descents, making it an ideal choice for modern enduro, downhill, and electric mountain bikes (e-MTBs).

Key Specifications & Features

• Mounting Standard: Shimano Center Lock splined interface for secure, play-free hub installation.
• Diameter: 203 mm (Size L).
• Material Architecture: Precision-cut stainless steel braking surface riveted to a high-rigidity aluminum carrier spider to reduce rotational flex.
• Pad Compatibility: Universally compatible with both Resin (organic) and Metal (sintered) pad compounds.
• Minimum Wear Limit: The rotor must be replaced once the braking track thins down to 1.5 mm.
• Lockring Interface: Standard 203mm variations include an external-serration lockring, which requires a 16-notch external bottom bracket tool to clear thicker thru-axles (up to 20mm) and torque safely to 40 Nm.

This rotor is built to deliver reliable performance in the most demanding conditions, ensuring maximum braking power and durability for riders who push their equipment to the limit.