C-Bear OCM-X Spoke Derailleur Pulley Wheels - Hybrid Ceramic - Shimano Dura Ace 12-speed - R9250

Derailleur tuning made simple!

Properties of C-Bear Spoke Pulley Wheels

• Each C-Bear pulley wheel set consist of 2 wheels, upper and lower.
• Fits original cage. No extra spending to purchase another fitting one.
• All C-Bear products are standard with ceramic bearings.
• Simple 2 years warranty against manufacture defects. ( No “and/or/if/then”  conditions attached).
• Precision CNC machined aluminum parts.
• Hardened surface treatment, more wear resistant.

Why Ceramic, why C-Bear?

Lightweight: Si3N4 ceramic balls are significantly lighter than steel balls, reducing rotational mass and enhancing overall bike performance.
Low Friction: The smooth surface of Si3N4 ceramic balls reduces friction, leading to improved efficiency in the cycling mechanism.
High Hardness: Si3N4 ceramic balls exhibit exceptional hardness, resulting in greater durability and resistance to wear, thereby extending the lifespan of components.
Corrosion Resistance (water, salt water and many acids) : Si3N4 ceramic balls are highly resistant to corrosion, making them ideal for cycling applications where exposure to moisture and harsh conditions is common.
Reduced Maintenance: Due to their durability and resistance to wear, Si3N4 ceramic balls require less frequent maintenance compared to traditional steel balls, contributing to long-term cost savings and hassle-free cycling experience.