The Cronometro Nob accommodates a standard diameter computer mount and fits most bar and stem diameters up to 1 3/8".

Cronometro Nob XL mount.

Lightweight carbon fiber computer mount designed for 31.8mm handlebars.

Garmin's robust ANT wireless heart rate monitor with softer, more comfortable chest strap and superior battery life eliminates cross-talk with other devices to reliably measure and send heart rate data to help you train in your zone. Heart rate monitor strap is compatible with the edge 305 only.

Extra Bike Mount is compatible with the Garmin 605 /705 & 305 Edge. Includes bar & stem mount with zip ties.

GARMIN Forerunner 305 Extra Bike Mount.

Monitor your pedaling cadence as you ride with this self-calibrating, wireless speed/cadence sensor. It measures and reports your pedaling strokes per minute, providing feedback for optimal performance.

Computer spoke magnet.

Upgrades Rebel 5.0 or 8.0 with cadence.

Polar CS Series Cadence sensor. Wireless version includes mounting hardware. For CS100, CS200, CS300 and CS400.

Measure real time cadence and average cadence.

Wireless Polar CS speed sensor and bike mount. New advanced sensor measuring the cycling speed. Wireless sensor that provides current, average, and maximum speeds. Easy attachment and aerodynamic design. For CS100, CS200, CS300 and CS400.

Wireless W.I.N.D speed sensor for the bike measures real time current, average and maximum speeds plus distance traveled.

Lets you mount and view your Polar HRM on your bar. Works with all Polar HRM's and is compatible with all handlebar styles and thicknesses. Includes zip ties and no-slip shims.

Replacement strap for Polar T-61 transmitter. X-small, small, medium or large.

The new Polar IR Interface quickly transfers the data from your Polar heart rate monitor to your PC. The IR Interface also allows you to upload your training zones and timers from your PC for easy programming. Store and analyze critical performance data and maintain a detailed training log.

Polar IrDa USB 2.0 Interface is compatible with:

F55F, F55M, AXN500, AXN700, RS400, RS800 S610i, S710i, S720i S810i, S625X, S725, S725X

Not compatible with the discontinued Polar S610, S710, or S810 monitors.

X-small/small repalcement strap for Poalr Wearlink transmitter.

The new WearLink™ coded transmitter comes standard with every S725. Made from a soft fabric material, the WearLink™ transmitter will contour to your body’s every curve. Compatible with all S-series coded heart rate monitors.

Spoke magnet for Shimano Flight Deck systems.

Mount kit for VDO MC1.0+ computer.

Wireless bar mount for VDO MC1.0+ computers.

Add the VDO cadence wireless option to your VDO system. Compatible with all digital VDO systems.