The Icon 3.0 shock is massive compared to the 2.5 shock we were running. It has internal hydraulic bump and top-out stops, a huge 3″ piston, and longer travel.
The Icon 3.0 shock has a huge 3″ piston and you can see how fat the shock body is to contain it.
You can also see how much bigger the remote reservoir is on the 3.0 to handle the greater fluid displacement that the bigger piston and rod require.
An internal cutaway diagram of the 3.0 shock shows how the dual piston internal bypass system works. We did a detailed article about the shock previously.
The 3.0 shock is installed in place of the 2.5 shock.