A gait trainer only works when it rolls the way the child expects. This right rear wheel is the Ormesa replacement for Grillo frames in the medium and large sizes, for when a wheel is worn, damaged or no longer running true.
Rear wheels on a Grillo carry the braking and anti reverse function, so a tired wheel is not just a rolling problem: it changes how much the child has to work and how safely the frame holds when they stop pushing. Replacing it restores the behaviour the frame was set up with.






