Designed to get young riders pumped on riding trails xtc jr 20 and 24 are just the right size and have all the right features with a lightweight aluminium frame front suspension fast rolling 20 or 24 inch wheels and trail ready tyres this mini mountain bike is up for adventure frame aluxx grade aluminium fork hl steel 50mm travel drivetrain shimano revo shift and tourney 7 speed brakes alloy linear pull wheels giant kids 20 aluminium rims with nutted joytech hubsframesize