COROS Bike Cadence Sensor – Bluetooth, Crank Arm Mount, IP67

The COROS Bike Cadence Sensor is a compact, crank arm-mounted cadence sensor that tracks your pedalling RPM and transmits it via Bluetooth to compatible COROS watches, bike computers, smartphones, and training apps. Cadence data is one of the most useful metrics for improving cycling efficiency — training to a consistent target cadence reduces muscular fatigue, improves power output, and helps you ride stronger for longer. The COROS cadence sensor makes this data available on any Bluetooth-enabled device without the need for a dedicated cycling computer.

The sensor attaches to the crank arm of your bike — a simple, secure mount that works on road, gravel, and mountain bikes, as well as most indoor spin bikes. It's IP67 water-resistant for all-weather outdoor use, and the CR2032 battery provides up to 12 months of use before replacement — a widely available, inexpensive cell that takes seconds to swap. Pairing is straightforward via Bluetooth, and the sensor works with any Bluetooth heart rate-enabled device or training app that supports cadence sensors, including Zwift, TrainerRoad, and most cycling apps. Note: this sensor uses Bluetooth only and is not ANT+ compatible — check your device's connectivity before purchasing. For speed data alongside cadence, the COROS Bike Speed Sensor is available separately.

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

• Tracking pedalling cadence (RPM) to improve cycling efficiency and reduce muscular fatigue
• Crank arm mount — compatible with road, gravel, MTB, and most indoor spin bikes
• Bluetooth connectivity — pairs with COROS watches, most bike computers, smartphones, and training apps
• IP67 water resistance — suitable for all-weather outdoor riding
• Up to 12 months battery life on a standard CR2032 cell
• Compact, lightweight design with minimal impact on bike aesthetics or weight

What It's NOT Good For

• ANT+ devices — this sensor is Bluetooth only; check your device's connectivity before purchasing
• Speed measurement — this is a cadence sensor only; for speed data, the COROS Bike Speed Sensor is available separately
• Wired sensor setups or devices without Bluetooth support

Frequently Asked Questions

Is it compatible with non-COROS devices?
Yes — the COROS Bike Cadence 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 is cadence important for cycling?
Cadence (pedalling RPM) is a key metric for cycling efficiency. Most coaches recommend a cadence of 80–90 RPM for road cycling, as higher cadences shift the workload from muscles to the cardiovascular system, reducing muscular fatigue on long rides. Monitoring cadence helps you develop a more efficient pedalling style and avoid grinding low gears, which accelerates fatigue and increases injury risk.

How do I install it?
The sensor attaches to the crank arm of your bike — no tools required. Follow the included instructions to position and secure the sensor on the crank arm, then pair it to your device via Bluetooth in the sensor settings menu.

Can I use it alongside the COROS Bike Speed Sensor?
Yes — the COROS Bike Speed Sensor and Cadence Sensor are separate products that can be used simultaneously, giving you both speed and cadence data on your device. Many cyclists use both for a complete picture of their cycling performance.