Pro form 210 csx upright bike the pro form 210 csx upright bike is a great way to upgrade your home workouts with the featuring 14 pre set workout apps digital silent magnetic resistance from 1 16 a 7kg inertia enhanced flywheel and ipod compatible audio with 2 2 speakers the pro form 210 csx upright bike is designed with a digital silent magnetic resistance from 1 16 and a 7kg inertia enhanced flywheel the new 210 csx upright bike is ideal for your cardio training at home allow the e