Apparently it's a "Tekno Traktion Drive" which seems to be discontinued. I remember seeing clutch setups on the Tekno conversion kits but never on a normal 8ight one.
Found the info here
http://www.teamtekin.com/news/undert...er-adam-drake/ and it said "Adam feels makes the car more forgiving to drive on the rough tracks he visits such as the Psycho Nitro Blast or Silver State."