I bought a kit for my flintstones and installed them today. I noticed when the rubbers are stretched to go over a post, they turn white. The stretching makes them turn partially white in the stretched area. So instead of a nice purple rubber you now have a purple and white rubber.

Kind of a bummer for such expensive parts.

silicone.

I probably won't spend the extra money on titan rubbers again. They don't play a lot differently from what I can tell. If they last 3-4 times longer than regular rubbers, then, they will have equaled the cost of an $18 regular rubber set.

Yeah, it's cool that they make colors. They do get bonus points for the great color availability.

I ordered the titan competition ring set. It was about $51 as I remember. They sure feel like silicone. I only noticed the white stretching issue on the many small star post rings. Maybe they substituted some rubber rings due to a shortage? Who knows.