Cube reaction gtc eagle 29 hardtail bikeif youre looking for the ultimate in lightweight race bred hardtails your search is over the reaction eagle takes cubes acclaimed carbon chassis and pairs it with srams ground breaking x01 eagle 1x12 transmission super fast clean shifts controlled from a single shifter leave you to concentrate on getting the power down to the trail the result unmatched speed and control the 29 wheels allow you to carry high speed over a great variety of terrain