• BMX- has 20 inch wheels and are commonly used at skate parks or dirt jumps. It is easy to perform tricks and stunts with because of their smaller wheels.
•  Cross Country- made for riding up and down hills. It is considered to be the least extreme form of mountain biking.
•  Cyclo cross- a cross between road and mountain biking where the riders have to go through obstacles, cross rivers and race on and off course or trials.
•  Dirt jumping- used to jump over man-made dirt jumps while doing tricks on air.
•  Downhill- for racing downhill as fast as possible. It is very intense and extreme that is very perfect for adventure seekers.
•  Freeride- Competitions on this are popular as the rider has to find the perfect line down the mountain using all of the terrain to express himself.
•  Single speed- a bike with only one gear. Simplicity is the key meaning, less mechanical problems plus a lighter bike to compete with.
•  Street and Urban- involves riding around the city or urban areas, through stall and grinds.
•  Trails- 20 or 26 inches of wheels are used and they have small low frames. Trail riders are required to have an extreme amount of balance and concentration to jump over their obstacles.

• Cross country mountain bikes are the most common mountain bikes that can be use with ease for riding on almost all kinds of terrains and even on up and downhills. They could also be used on bike path or even in commuting. They are very lightweight.
• Downhill mountain bikes are for the serious bikerswho wants the ultimate adventure. It is equipped with front and rear suspension, strong parts and disc brakes.  Most rider like to custom build their own bikes because these bikes are rarely available in the market.
• Trial mountain bikes  are similar to the downhill bikes because trial rider often build their own bike rather than buying it off a shelf.  They customize these bikes because it involves a great degree of skills and is classified as the precision riding of the sport. Trial mountain bike are very light, very strong and these bikes require a lot of discipline.
• Slalom and jump bikes are designed for jumping, street racing and slalom.  This is build with a front suspension and uses a very strong components committed to what they do.

There are a lot of mountain bike to choose from depending on your style of ride.  If your looking for the best, try out several bikes and see which one suits you best.