THE ESSENTIAL INDOOR SMART TRAINER Built to live up to its legendary namesake, KICKR CORE Smart Trainer delivers a realistic, accurate and quiet indoor ride. Designed with the toughest cyclists in mind, KICKR CORE is made to endure and withstand your most intense training sessions, watt for watt - season after season. FLEXIBLE AND EASY SETUP KICKR CORE is compatible with 8, 9, 10, and 11 speed cassettes and gives you the flexibility of adding your preferred cassette to the trainer, so that you can fully mimic your outdoor groupset. The Wahoo Fitness app offers guided set-up instructions to fine tune your ride and start training! ECOSYSTEM COMPATIBLE KICKR CORE is compatible with KICKR Trainer Accessories, including the KICKR CLIMB Grade Simulator and KICKR HEADWIND Smart Fan, allowing you to build the ideal setup for your training needs. MULTIPLE BLUETOOTH CONNECTIONS KICKR CORE supports up to three Bluetooth connections simultaneously for a trouble-free workout experience. DESIGNED TO ENDURE The KICKR CORE was built to the quality that cyclists around the world have come to expect from Wahoo. Made to withstand your most intense training sessions, watt for watt — season after season. Specifications Part Number WFBKTR4 Dimensions (legs open) 20"L x 23"W x 19"H Dimensions (legs closed) 9"L x 23"W x 21"H Weight (unboxed) 18kgs Rear Wheel Size 24" RD / 24" MTB / 650c RD / 26" MTB / 700c RD / 650b MTB / 29" MTB Hub Types 130/135mm QR, 12x142, and 12x148 Thru Axle Adapters Included Drivetrain Cassette not included. Requires Purchase/Installation of New Cassette: 8/9/10/11 Speed SRAM/Shimano KICKR CLIMB Compatible Yes RPM Cadence Not Included Front Wheel Block Not Included Resistance Type Electromagnetic Accuracy + / - 2% Wireless Software Updates Yes 3rd Party Power Meter Support Yes Connectivity ANT+, ANT+ FE-C, and Bluetooth Devices iOS, Android, PC (Mac and Windows) Max User Weight 250 lb Power Requirements 100-240V~1.5A 50-60 Hz Flywheel Weight 12 lb Maximum Simulated Grade 16% Maximum Power Output 1800W