The Shimano RT-EM300 Disc Rotor in the 180mm size is engineered to deliver exceptional stopping power, especially in conjunction with speed sensor systems. Designed for a variety of riding conditions, these rotors are part of Shimano’s renowned line of braking components known for their performance and reliability.

Key Features:

• Size: The rotor is 180mm in diameter, providing ample braking surface for effective stopping power.
• Speed Sensor Compatibility: Specifically designed for use with speed sensor systems, enhancing braking performance.
• CENTER LOCK Mounting System: The rotor features Shimano’s CENTER LOCK mounting system, allowing for quick and easy installation and removal. The spine mount and lock ring design contribute to the efficiency of this system.
• Lock Ring Included: The rotor comes with a lock ring, featuring both internal and external serrations for secure installation.