Yes, you are correct in that the single compound version that's available in the States is the SuperTacky. The other dual compound version that's available elsewhere actually uses the MaxxPro 60a compound as the outer layer of the tread. The base layer is a different compound, which is needed for air retention. At this time I'm not aware of any plans to bring this tire into the States. But if there is ever anything you would like to see that's not currently available, or if you simply have a great idea, the best place to voice your opinion is the contact submission form on the website: http://www.maxxis.com/About-Maxxis/Contact-Us.aspxbholwell: I can't find the answer to this on the Maxxis site, so hopefully you can enlighten.
The 2.5 UST High Roller is now offered in two compounds, a "single ST" and a "dual" compound. I'm assuming the single compound is Super Tacky, but what about the other one? Is that the same as what was called the Maxxpro 60a last year? Something new?
I've used and liked the 2.5 UST Maxxpro 60a HR, but I've had a couple of them get holes through the tread from rocks, whereas that has never happened for me on the ST. I'd like the rubber compound of the 60a with the casing durability that I've experienced with the ST, in an ideal world.