the s11.9 carbon drive™ system indoor cycle is a data-driven bike with virtually no maintenance. well-considered design and solid core construction create the foundation for an aerobic and strength training workout that maximizes calorie burn. the bike's magnetic resistance creates a hiit workout that drives up heart rate and builds muscle mass. an ekg chest strap wirelessly sends workout stats to the machine to let you know exactly where you are - and where you need to be. a compact footprint and sporty design create a class ambiance that exudes energy and excitement, ready for the ride.