Parts & Accessories

Keep your computer and sensors ready for every ride with replacement batteries Key features: - CR2032 battery is used for most Trek and Bontrager computers - 23AE battery is used for the Bontrager Interchange Analog Wireless Sensor - LR44 and L1154 batteries are identical and used in Bontrager SpeedTrap Sensor

Wheel magnet for all CatEye cycle computers

Mount your Garmin Edge computer with the Quarter Turn Bike Mount. It includes the bike mount, rubber disc, and elastic bands to secure the Quarter Turn to your stem or handlebars.

The MSW Computer Spoke Magnet is designed to fit round and bladed spokes of various diameters. - Tool-free installation - Alloy construction - Fits round and bladed spokes

Know what's coming. Ride with extra confidence with Trek CarBack Radar Rear Light. CarBack's radar helps detect rear-approaching vehicles from up to 240m and provides audio and visual alerts through paired GPS head units for increased on-bike awareness. Built with integrated best-in-class Daytime Running Lights that are visible from up to 2km away, CarBack is a must-have for every cyclist riding on shared roads. - CarBack can detect and alert riders of rear-approaching vehicles from up to 240m away - Compatible with most cycling GPS computers - Pair CarBack with the Trek Accessory app to see a vehicle's rear-approaching and passing distance on your smartphone - Designed with focus, flash, and range to be Daytime-visible from up to 2km away - Four light flash modes: Day Flash 90LM, Day Steady 25LM, Night Steady 5LM, and Night Flash 5 LM - Visible fuel gauge LEDs make it easy to see CarBack's 7+ hour battery status - IPX7 waterproof rating to confidently ride through wet conditions - Includes Quick Connect Plus rear mount and USB-C charging cable

Get your computer dialed with the perfect magnet Getting the correctly sized magnets means you're worrying about where the next coffee stop is, not if your computer is recording the ride. - Universal crank magnets sized for your bike and sensor - Compatible with all cadence sensors

Take open-ear listening to new depths. Swim, run, cycle, and train harder than ever before with open-ear headphones that can withstand all elements. - Open-Ear Design—Patented bone conduction technology delivers audio through the cheekbone, keeping you comfortable and aware of your surroundings in or out of the water. - Internal Music Storage—Load your favorite audio and dive into your workout with 4GB of built-in MP3 storage, holding up to 1,200 songs. Not compatible with Bluetooth or audio streaming services. - 8-Hour Battery Life—Enjoy 8 continuous hours of premium audio while you're cross-training. - IP68 Waterproof Rating—Fully waterproof, Xtrainerz headphones perform in and out of the water. Submersible in depths up to 2 meters for 2 hours. - Comfortable + Secure—An open-ear design enables bud-free listening and keeps the headphones in place for every stroke.

A wheel magnet for use with most cyclo-computers.

Cadence Magnet for all CatEye computers that record cadence.