Saris H3 Direct Drive Smart Trainer - Electronic Resistance, Adjustable

The Saris H3 is a direct-drive smart trainer: remove the rear wheel and mount your bike directly to the cassette body for quiet, consistent resistance. It communicates power, speed, and cadence to Zwift, TrainerRoad, and other training apps, and simulates grades up to 20 percent. The internal flywheel keeps pedal feel smooth. A good pick for structured winter training and interval work when you can't get outside.