The Junior comes equipped with a 6061 T-6 alloy frame with an 18.25" top tube, which is lightweight and allows the rider to have complete control over the bike, no matter what the conditions. The Sinz 155mm three-piece alloy crankset comes with sealed bearings, which work to hide the bearings and prevent them from degradation and rust, in order to prolong the lifespan of the bike. This bike also comes with 1-1/8" Intense Micro Knobby tires, which offer a certain grip, to allow the rider to have control in any condition.