Tacx FLUX 2 Direct Drive Smart TrainerCompared to the first version, the Flux 2 Smart T2980 turbo trainer by Tacx comes with a heavier flywheel and a stronger resistance unit to increase maximum resistance for a much more realistic ride feel. So it can simulate inclines up to a 16% gradient at a constant pedalling frequency on your next virtual climb. Once fitted with the proper cassette, all you need to do is remove the rear wheel and attach the rear dropouts of your bike to the axle of