Originally Posted by Patriot
If 90mm is so bad, why do they readily use 60-70mm stems on MTB's?
Early MTBs had shorter top tubes and longer stems. Mine from 1987 is a "medium" and it has a 130mm stem!!! Somewhere along the line, someone realized that if you lengthened the top tube and shortened the stem, you'd have the handlebars in the same position but you'd also have a bike that would not endo as easily since the rider's weight is a bit further behind the front wheel.