we run the 21 and the 29, the heavier kids 120 and up bend the frames on the 21, they are good bikes but if you are going to jump and weigh over 120 get a 29. We replace the stock axles at a minimum on both bikes.
we run the 21 and the 29, the heavier kids 120 and up bend the frames on the 21, they are good bikes but if you are going to jump and weigh over 120 get a 29. We replace the stock axles at a minimum on both bikes.