The cybex 500ic indoor cycle is a fantastic spin bike to have whether it be to use in the comfort of your own home or in spin classes or just at the local gym this piece of cardio equipment has a handful of quality features to help you on your way to your aims the belt on this bike is a poly v belt drivetrain which means it requires less maintenance has fewer breakdowns and improves the overall pedalling action for users allowing for a much more efficient workout the 15kg flywheel helps all