Garmin Speed Cadence Bike Sensor Replacement Kit Fenix D2 Edge eTrex Forerunner

Monitor your pedaling cadence and wheel speed as you ride. You can even use it to train indoors because the sensor attaches to your rear wheel.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.