Coros FD03 Bike Cadence Sensor

The Coros FD03 Bike Cadence Sensor helps you ride more efficiently by tracking your revolutions per minute (RPM). Optimizing cadence allows cyclists to maintain endurance and power across varied terrain and training sessions.

Perfect Your Pedal Stroke: Knowing your cadence helps you develop a smoother, more consistent pedal rhythm. Whether you're riding outdoors or on a spin bike, the sensor helps you dial in your ideal cadence range to boost both performance and comfort.

Universal Bluetooth Compatibility: Easily pairs via Bluetooth with most bike computers, smartwatches, smartphones and training apps. Unlike many sensors, it’s also compatible with most indoor spin bikes—giving you seamless feedback across your rides.

Quick, Discreet Installation: The compact unit securely attaches to your bike’s crank arm and stays out of the way while you pedal. Its streamlined profile ensures no interference with your ride setup or motion.

Battery That Goes the Distance: Powered by a CR2032 coin battery, the FD03 offers up to 12 months of continuous use. Installation and replacement are easy, letting you focus on training instead of charging.

Made for Every Ride, Rain or Shine: Its IP67 water resistance rating protects the sensor from dust, sweat and splashes, making it rugged enough for any training environment—indoor or out.

Weighing just 11g, the Coros FD03 is a featherlight essential for serious cyclists. Not compatible with ANT+ devices.

We ship across India. Shipping is free on orders above ₹2,000, and ₹99 is charged on orders below ₹2,000. Cash on Delivery is available for orders up to ₹20,000, with additional COD charges based on order value. Most orders are delivered within 3–6 working days, though delays may occasionally occur. Please note that most Shimano products may take longer to ship. View full shipping policy.

Returns can be initiated within 7 days of delivery. Items must be unused, in original condition, and returned with all tags and packaging intact. Returns are available only on select categories such as apparel, helmets, jerseys, gloves, and similar items. Wetsuits and products discounted above 5% are not eligible for return.

Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. Return shipping must be arranged by the customer, as pickup is not available.

For eligible returns, you can choose an exchange, store credit, or a monetary refund. Refunds are processed after deduction of applicable shipping and transaction charges. Order cancellations are only possible before the order is processed. View full Return & Refund Policy.