21926ProForm® X-Bike Duo Upright and Recumbent Bike The ProForm® X-Bike Duo is latest in the X-Bike family. Designed to go from upright bike to recumbent bike in seconds, you quickly get the workout of your choice. Take your training anywhere in the world with iFit® along with the sturdy tablet holder. The large LCD window lets you see your progress as it displays your speed, time, distance, resistance, heart rate, and calories burned. Get 14 digital ...