Mountain bikes are designed for off-road riding. Whether made for racing or the more leisurely rider, there are four basic frame designs for mountain e-bike: rigid, hard-tail, soft-tail, and full suspension.
The mountain bicycles resemble a traditional type of bicycle as you'd envision it. A stiff mountain bike has a neither back suspension nor front suspension.
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These are the most frequent sort of mountain bike but they're quickly being replaced with the more comfy models that feature some kind of suspension method.
Fully rigid bikes are normally lower-priced than models using a suspension. Many riders still favor stiff bikes since it is what they are used to, and the sense the rigid layout allows them more control.
Another frequent mountain bicycle design is hard-tail. Hard-tail mountain bicycles are so called because they have a traditional rear end with no suspension. Hard-tails differ from completely stiff bicycles so they have front suspension.
The hard-tail is possibly the most popular mountain bicycle design. Many specialist riders prefer the sense of a hard-tail along with the relaxation of the front suspension.
The following sort of mountain bicycle design is soft-tail. As you probably figured, soft-tails use a back suspension. Back suspensions are a more recent invention than front suspension on account of the intricacies of the plan.
Finally, there is the complete suspension mountain bike. Bikes with this particular design feature both front and rear suspensions. These bikes are the latest mountain bicycle design. For a very long time, cyclists averted full suspension bicycles since they were heavy and they tended to sag in the center like a classic swayback horse.