Tubular tires have been gaining acceptance on the World Cup circuit over the past couple of seasons due to their ride quality and performance. Challenge tires has a long history in Europe and is now making its way on to U.S. soil bringing with it their MTB One tubular mountain bike tire. The MTB One features special mud shedding large tread to grip in the worst conditions yet, while remaining fast and agile at the same time. It is available in a 2.0 width with 26 and 29 inch versions. Price: $137 More: challengetech.it