MERACH 4-in-1 Foldable Exercise Bike

The MERACH 4-in-1 is the best budget option in this roundup and the bestselling exercise bike on Amazon. Over 2,400 reviews at 4.6 stars speak for themselves. The 16-level magnetic resistance gives it a wider intensity range than most bikes at this price. It folds flat for compact storage, includes resistance bands for upper body training, and features a comfortable padded seat cushion. The LCD monitor tracks your key metrics and heart rate via hand pulse sensors. An outstanding value for home cardio.