Specifically developed for Trial Competition use.Incredible dual rubber compound features softer rubber for the tread, and harder rubber for the sidewalls.Tread blocks create a natural wide, flat footprint.Radial construction.Incredible gripping power pro Specifically developed for Trial Competition use.Incredible dual rubber compound features softer rubber for the tread, and harder rubber for the sidewalls.Tread blocks create a natural wide, flat footprint.Radial construction.Incredible gripping power pro