Originally Posted by
oldnslow2
I'm just surprised that Trek uses such a long stem when short ones, that will work, are available.
Fewer SKU's for puchasing and production to coordinate. "One size fits all" trumps inventory management.
There's no issue with longer valves except that it makes hand pumping a bit harder. IMO it also increases the risk of snapping a valve off when pumping with a direct fit hand pump. I use only shallow valves, and am finding it a bit harder to find 32mm valve tubes, so I keep deep stock.
I have seen tubes with a mid length valve, but this is giving way to an "either short or long" selection.