I purchased CushCore because I was constantly puncturing my tires out on the trails and having to walk my bike back to the trailhead five miles away. Plus every time my tire pinched flatted, I ran the chance of ruining my tire or worse my wheel. Through Worldwide Cyclery reviews I found out that this could be easily corrected and potentially avoid costly repairs and preventing me to have hike back to the trailhead instead of riding. If you watch all of the reviews everyone is stressing the install but, my experience with the installation is the same as anything you try to install on your bike for the first time is challenging. But, with a little patience, sweat and no tears it went on pretty easy. Just follow the instructions or videos that are available on the Worldwide Cyclery website.
The weight difference is negligible. Truthfully, I did not notice a difference in the weight during my rides. Climbing with the CushCore on lose terrain felt the rear tire very sturdy and one with the ground. It is immediately noticeable while riding that the extra cush and stability are present with the added CushCore. Just today I hit an arroyo where I had a previous pinch flatted at full speed and it felt so great. No rim ding sound what so ever, the CushCore worked and did its job as described and then some. Before CushCore for years I rode with 15 psi and would repeatedly bottom out, but with CushCore, not a problem.