Shimano RT-EM300 Rotor with Internal and External Lockring, 203mm

The Shimano RT-EM300L is a robust 203mm Center Lock rotor specifically engineered for e-bikes. Designed for the rear wheel, it includes a crucial integrated magnet that works with the Shimano STEPS speed sensor (like the SM-DUE11), ensuring precise electric assist and speed measurement. This large rotor provides strong, consistent braking performance, but it requires the use of resin brake pads only.

Please Note: Rear wheel use only

Included:

• Shimano RT-EM300L 203mm brake rear brake rotor
• Internal/External lock ring
• Speed sensor magnet