73 Child's Bike This great value all-aluminium bike has a high quality frame, adjustable Tektro brakes, 7-speed Shimano easy-twist gears & easily adjusted saddle height. Available in red, violet, orange or black, & comes with a bell, reflectors & mudguards as standard. Suitable for minimum inside leg of 73cm (around 12-14 years old). Free 5 year warranty available on the frame & forks, 2 years on all other parts.