Yes and No. 

The suspension travel on the ShockStop (1-2cm) is optimized for the types of bumps you typically encounter on roads and light trails. So, the ShockStop is not going to provide the same suspension feel as a typical mountain bike front fork suspension, which will have closer to 10-15cm of travel. 

However, if you use your bike primarily on the lighter trails (i.e. not aggressive downhill) and you’re looking to take the edge off of an otherwise stiff frame (e.g. a bike with a rigid front fork), then the ShockStop could be exactly what you’re looking for. Please note that the 55mm and 70mm lengths will not work with flat bars. 

The ShockStop is not designed to be used on a mountain bike riding on technical downhill single track, and if used in these conditions, it could become damaged and lead to serious injury.