Sigma Sts Trittfrequenz Sender Kit Bicycle Cadence Sensor

When you're grinding through interval efforts on a climb or trying to maintain an efficient spin on a century ride, cadence data keeps you honest. The Sigma STS Cadence Transmitter Kit picks up every pedal revolution wirelessly and feeds it to your compatible Sigma bike computer in real time — no cables to rattle loose, no extra drag. With an IPX8 waterproof rating, this sensor shrugs off torrential rain, creek crossings, and aggressive post-ride cleanups without skipping a beat. At just 20 grams, you'll forget it's even on the bike.

The kit includes the wireless cadence transmitter and a spoke-mounted magnet. Installation takes minutes: secure the transmitter to your chainstay, position the magnet on your crank arm, and you're reading cadence data on your next ride. The plastic housing is lightweight and durable under normal riding conditions, and the lithium battery provides extended life between replacements. It's a purpose-built accessory for riders already invested in the Sigma STS ecosystem who want clean cadence metrics without complicating their cockpit.