Pro form 310 csx recumbent cycle using the pro form 310 csx recumbent cycle you can take a new route with your cardio home workouts and take advantage of this feature rich product it offers 16 pre set workout apps digital silent magnetic resistance from 1 16 a 6kg inertia enhanced flywheel and ipod compatible audio with 2 2 speakers the pro form 310 csx recumbent cycle offers a similar specification to the 210 csx upright bike however with a step through recumbent frame instead of the upr