I'm 5-11 and was feeling because of the folding telescoping handle bar riser at it's lowest position "was" so high - something like riding a motorcycle with "Ape Hangers". Very comfortable when riding on smooth streets but have no leverage when want to jump the front wheel ex, pot hole or curb, similar on the trail ... branches, berms. Standing on pedals a little help, sitting no.
I started searching aftermarket shorter risers but couldn't figure out what would be a comparable spec so --- I took riser apart and cut the stock riser and telescoping extension 3". I duplicated the "slots, screws and set screw". Because the external tube tapers larger as it goes down to get the telescoping extension clamp to fit I marked width of band and sanded this area to match original diameter.
Note: I set handlebar as low as I could without being in an awkward position.
I've ridden 60 miles street and trail and it's much better to leverage up the front wheel, overall in more control, slight forward lean riding position, better height when stopped and straddling and shorter girlfriend feels much more comfortable.
I might take off another 2 inches --- can always be raised via telescoping clamp.
Anyone else have this to high issue?