Classified are the creators of the revolutionary Powershift system - a wireless 2-speed shifting system integrated in the rear hub which removes the need for a front derailleur. This creates a highly dependable and high performing shifting system, while still offering wide and small ratio gears. Classified have refined all the components in the Powershift system, and we are delighted here at Sprockets Cycles to bring you this awesome range. Can't see what you're looking for? Get in touch and we'll be happy to help.