These have a distinct different from full suspension mountain bikes. A hardtail mountain bike has a distinct fork in the front, just above the front tire. Before you Google it, yes, full suspension bikes also have a fork in the front, but work differently. Hardtail mountain bikes are a single piece of frame, and are the best mountain bike varieties for pulling yourself uphill quickly. Power is distributed to the rear wheel, so you’re relying on your strength and a bit of engineering to help power you up harsh terrain.\r