A reengineered tread pattern designed for all-out speed

The SILCA Lifetime Warranty covers products from manufacturing defects for the lifetime of the user

Keeps the ring from getting muddy

UDH – bikes with a UDH derailleur will require a Restrap Switch UDH adaptor (available separately)

magene h603 heart rate monitor Mog A reengineered tread pattern designedThe Magene H603 Heart Rate Monitor (Chest) helps you accurately monitor your heart rate while exercising. Key Features of the Magene H603 Heart Rate Monitor (Chest): Accurate Real time Heart Rate Monitoring Choose between various colors Split chest strap design to bring you a better product experience Long Battery Life, Lasts for 1000 Hours Support Dual Protocol of ANT+ and Bluetooth allows connection to most devices.