The Icon 2.0 rears showed up today and it didn't take long to get them on.
I had planned on measuring droop before and after but my jackstands are not tall enough to let the axle droop much with the wheels on and I'm too exhausted to remove and reinstall them. What I did find is the OEM shocks are near maxed out with the truck sitting on the ground. No wonder the ride was rough whenever the rear wheels wanted to drop. Note, I have 1" Silverado lift blocks and AutoSpring AALs so I have around 2" of lift in the rear.
This is the OEM shock with the truck on jackstands but the tires are resting on the ground lightly.
Same as above but with the Icon shock
OEM vs. Icon 2.0 shock length comparison. The Icons are designed for 0"-2" of lift. Most other shocks (for these trucks) are only 0"-1".
Installed
I'm a little concerned about their comment in the instructions about needing a crush washer or sleeve if the OEM shock uses a through bolt. Does this look right?
After I buttoned things up and took it for a test drive I fully expected the ride to be harsh after reading all the posts from anti-Icon folks but the shocks felt great. The ride felt more solid and damped in the rear. Small bumps could still be felt but they were more muted, less sharp and the axle didn't feel like it was ready to explode upwards when the rear tire dropped off bumps. This was a very short test drive so I'm not sure if all of this will remain true but for now I am impressed and happy with the purchase.