Garmin Speed Sensor 2 bike speed sensor — Black, magnet-free wireless, ANT+/BLE compatibility

The Garmin Speed Sensor 2 is a compact, magnet-free wireless device that mounts to a wheel hub to deliver reliable speed and distance data for cycling and indoor training.

Designed for riders who want simple, accurate speed tracking without fiddly magnets or exposed parts, this lightweight sensor pairs with compatible Garmin devices and third-party apps via ANT+ and Bluetooth Low Energy. It installs quickly on either wheel hub and can be transferred between bikes, giving you consistent speed and odometer readings whether you ride outdoors or train on a turbo trainer.

How does the Speed Sensor 2 measure speed and distance?

The sensor measures wheel rotations and converts them into speed and distance using your configured wheel circumference. You can enter wheel size manually in Garmin Connect or let an Edge cycling computer or compatible Garmin device self-calibrate for automatic accuracy.

• Mounts to either wheel hub to record rotations directly.
• Wheel size set manually in Garmin Connect or auto-calibrated by compatible devices.
• Provides continuous speed and distance even without a head unit attached.

Which devices and apps will the sensor connect to?

The Speed Sensor 2 uses ANT+ and Bluetooth Low Energy to pair with Garmin head units, fitness apps, and indoor trainers. That dual-protocol support ensures compatibility with many popular cycling computers, smartphones, and training platforms for seamless data sync.

• Pairs with Garmin Edge and other compatible Garmin devices using ANT+ or BLE.
• Syncs to Garmin Connect and common third-party training apps.
• Works with smart trainers and indoor equipment for consistent metrics indoors and outdoors.

How easy is installation and maintenance?

Installation is tool-light and straightforward because the sensor attaches to the hub without magnets or exposed components. The design minimizes upkeep and makes it easy to move the sensor between bikes, so you won’t lose time aligning parts or replacing fragile pieces.

• No magnets or external parts to align on the fork or frame.
• Quick hub attachment allows fast transfers between bikes.
• Low-maintenance sealed housing protects the internal sensor.

What additional features help with long-term tracking?

Beyond live speed and distance, the Speed Sensor 2 tracks total odometer data to help you plan maintenance and monitor bike wear. The sensor’s reliable reporting supports consistent data over time, useful for training, ride logs, and service intervals.

• Built-in odometer records cumulative distance for maintenance planning.
• Consistent reporting whether paired to a head unit or a phone app.
• Battery-powered design provides months of use before replacement.

Who is this for: The Garmin Speed Sensor 2 is ideal for cyclists who want an unobtrusive, accurate way to capture speed and distance across multiple bikes, whether they ride outdoors or train indoors. It suits casual riders tracking mileage, commuters monitoring odometer data for service, and cyclists using Garmin or third-party training ecosystems who need a dependable, easy-to-move sensor.