Looks great rides greatlooks great rides great 24 bikes just don39t get any better the perfect combination of light weight construction perfect sizing and style the mini cooker 24 features an aluminium frame 7 speed shimano gears and dependable disc brakes giving young riders all they need to rip up the trails in ease shimano 7 speed drivetrainfor the 20 wheel performance charge have fitted one more gear to give a shimano 7 speed drivetrain including a tourney rear derailleur an