Hutchinson Python 2 27.5" x 2.25 650b Mountain Bike / MTB Tyre - BlackHutchinson Python 2 27. 5" x 2. 25 650b Mountain Bike MTB Tyre Black Designing version 2 of the Python wasnt an easy task. This legendary tyre has won over numerous mountain bikers and supported the greatest champions over its twenty year history. The aim was to retain the tyres recognised qualities while incorporating into it technology recently developed by Hutchinsons engineers. With its new design and new rubber, the Python 2 is ready to take