Pretty new design (last year I think?) They have dual compound design. Soft rubber on the sides for extra stick and harder rubber in the middle for extra durability. I have one on my rear (got a nail a few months ago in my last tire - under 800 miles!) and I love it. Hasn't slipped once -rain or shine.
im changing tires this week, anyone have any suggestions. i heard the best for the twisties are the pilot power and the qualifiers, but the pilot power wear faster than the dunlops. Also i do a little of commuting but i like mostly to ride on canyons!! Any suggestions????