Shimano 7 speed drivetrain for the 20 wheel performance felt have fitted one more gear to give a shimano 7 speed drivetrain including a tourney rear derailleur and revo shifter both these offer a light action performance making it easier for kids change gear tektro cable actuated brakes tektro cable actuated disc brakes with 160mm rotors provide huge stopping power whatever the weather conditions built tuned and tested rest assured that each verenti bike is fully built tested an