COROS Bike Speed Sensor – Bluetooth, GPS-Free Speed & Distance, IP67

The COROS Bike Speed Sensor is a compact, hub-mounted speed sensor that delivers accurate speed and distance data without relying on GPS — making it particularly useful for indoor training, tunnels, urban riding with poor satellite coverage, and any situation where GPS-derived speed is unreliable or unavailable. It mounts to the front or rear wheel hub, connects via Bluetooth to compatible COROS watches, bike computers, smartphones, and training apps, and runs for up to 12 months on a single CR2032 battery.

Hub-mounted speed sensors work by detecting wheel rotation and calculating speed and distance from your wheel circumference — a method that is more consistent and responsive than GPS speed, particularly at low speeds, during acceleration, and in environments where GPS signal is degraded. The sensor is IP67 water-resistant, making it suitable for all-weather riding without concern about rain or spray. Installation is tool-free and takes a few minutes — the sensor clips to the wheel hub and pairs to your device via Bluetooth. The CR2032 battery is widely available and easy to replace when needed. Note: this sensor uses Bluetooth only and is not ANT+ compatible — check your device's connectivity before purchasing.

Browse the full Coros range or our computers and GPS collection for compatible devices including Garmin Edge computers and COROS watches.

What It's Good For

• Accurate speed and distance data without GPS — ideal for indoor training and poor GPS environments
• More responsive speed data than GPS — better at low speeds, acceleration, and deceleration
• Bluetooth connectivity — compatible with COROS watches, most bike computers, smartphones, and training apps
• IP67 water resistance — suitable for all-weather riding
• Up to 12 months battery life on a standard CR2032 cell
• Tool-free hub mount — quick installation on front or rear wheel

What It's NOT Good For

• ANT+ devices — this sensor is Bluetooth only; check your device's connectivity before purchasing
• Most indoor spin bikes — the hub mount design is not compatible with the fixed hubs of most spin bikes
• Cadence measurement — this is a speed sensor only; a separate cadence sensor is required if you want cadence data

Frequently Asked Questions

Is it compatible with non-COROS devices?
Yes — the COROS Bike Speed Sensor connects via standard Bluetooth and is compatible with most Bluetooth-enabled bike computers, smartwatches, and training apps including Zwift, TrainerRoad, and others. It is not ANT+ compatible, so devices that only support ANT+ (without Bluetooth) will not work with this sensor.

Why use a speed sensor if my watch or computer already has GPS?
GPS speed can be unreliable at low speeds, during rapid acceleration, in tunnels, in urban environments with tall buildings, and indoors. A hub-mounted speed sensor measures wheel rotation directly, providing more consistent and responsive speed data in these situations. Many cyclists use both GPS and a speed sensor together for the most complete data.

How do I install it?
The sensor clips to the hub of your front or rear wheel — no tools required. Once mounted, pair it to your device via Bluetooth in the sensor settings menu. You'll need to enter your wheel circumference in your device settings for accurate distance calculation.

How long does the battery last and how do I replace it?
The CR2032 battery provides up to 12 months of use. When it needs replacing, simply open the battery compartment on the sensor and insert a new CR2032 cell, which is widely available from supermarkets and electronics retailers.