It’s rock solid..They only thing missing is the trunk, which did not support the back rest as the bolts passed through...I suppose the extreme edges, left and right, are a bit flexible...she has not ridden it yet...I’m going to be reluctant to re-mount the trunk...aside from the center of gravity improvement, the little trailer I am building will replace twice the space and add less than half the weight, but down low, where it belongs...