"Updated in 2017, the Wahoo KICKR indoor bike trainer is more compatible than ever! The KICKR now fully supports 12x142 and 12x148 thru axle spacing making it even easier to fit all of your bikes onto the KICKR. Simply take the rear wheel off your bike and connect to the Wahoo KICKR for accurate power measurement, controlled resistance, open third-party software options, and the smoothest indoor riding on the market.
Features -Heavyweight flywheel and advanced algorithms help replicate the momentum and resistance of challenging road rides -Wheel-off design ensures consistent, accurate power measurement (+/- 2%) and generates up to 2,000W of power -Robust carbon steel construction allows the trainer to stay in place while you crank out the watts -Connected to your device, the KICKR sets your resistance via your favorite app, software or cycling computer -Bluetooth® Smart, ANT+ and ANT+ FE-C enabled for wireless control and data transfer -Works with Wahoo Fitness app (included) and popular training software such as Zwift and TrainerRoad (not included) -Universal fit accommodates almost any bike type and size, from 24 in. bikes to full-size road and mountain bikes -Compatible with quick-release rear axle and hubs with 130mm or 135mm width; 12 x 142 thru axles -Compatible with iPhone 4S and newer; 3rd generation iPad and newer; iPad Mini and select Bluetooth Smart-enabled Android™ devices -Includes an 11-speed Shimano/SRAM compatible cassette and an RPM cadence sensor; also compatible with 8/9/10-speed Shimano/SRAM cassettes (not included)