Review on LERWAY Bicycle Bike Stem Riser by David Ross

I installed this on my Trek DS4 and loved it as it made my back straighter and more comfortable to ride. However, on a family outing, we stumbled on a small children's track with tiny ups and downs, hills and turns, and on a tiny hill with a tight left turn, my steering wheel spun the other way and I fell. So as long as you ride on smooth ground and not mountains or rough terrain you should be fine, but I wouldn't trust that.