explain me about the rear suspension of mountain bike.
closed as too broad by Gary.Ray♦ Mar 10 '14 at 12:58
There are either too many possible answers, or good answers would be too long for this format. Please add details to narrow the answer set or to isolate an issue that can be answered in a few paragraphs.If this question can be reworded to fit the rules in the help center, please edit the question.
Here is a very rough answer to your very generic and open ended question:
A rear suspension (or shock), together with the front suspension (fork), allows the bike to handle more terrain roughness. This gives you:
The main two types of rear suspensions are:
Generally air suspensions are lighter and better for XC, all mountain, enduro. Coil shocks are heavier, more linear and better for downhill. See What's the difference between All-Mountain, Cross Country, Freeride, Downhill bikes? for a reference on mountain bike types.