Impulse PS450 Magnetic Indoor Spin CycleThe Impulse PS450 Spinning Bike, is a high end quality commercial bike. The PS450 has designed its flywheel to be at the rear, which gives you the experience of riding a real bike. Being rear mounted, it protects the flywheel from sweat and water while you exercise. The PS450 features a chrome plated flywheel, which creates a secure, quiet and vibration free workout, as well as an adjustable magnetic resistance that simulates actual riding,with 20