Squatting Dog
FRF Addict
The Icons do have an internal bump system. The main piston is a 3.0 that does the majority of the dampening. However, they have added an additional smaller piston to the top of it, so when the shock enters its last few inches of travel, the smaller piston enters a smaller cylinder at the top of the shock that is valved extremely stiff. This in turn slows the shock, prevents bottoming and acts as the internal bump stop.
In the front coil overs, not in rear bypass..
-Greg