Polar

CS Speed Sensor for 2nd Bike

If you use any Polar CS-series computer and you'd like to move your computer between bikes, this is exactly what you need. It includes both a handlebar mount and a fork-mounted speed sensor, plus all of the associated mounting hardware. You'll simply move the computer itself from bike to bike, while the hardware stays in place. Compatible only with Polar's CS-series computers, not with the S-510, S-710, and so forth.