Generally-speaking, 1cm longer in the stem is considered a minor change, and 2cm longer is a major change.I have a new bike with a 100mm stem. After some rides i have a little bit pain in my neck, so thinking about a longer stem. My bike is a 56, and im 188 cm long. Its diff for you to recomend something, but should i go for a 110/120mm stem instead?
I talked to my physiotherapist this last week about cycling-related neck-ache issues and she's really surprised that the small muscles that are responsible for being in a constant state of contraction from having to hold up a 10lb head for a few hours don't give more problems than they do. Try holding a 10lb weight with a contracted bicep for a few hours and see how well that muscle performs.A stiff neck has at some time probably afflicted all riders that I know which is not surprising when you consider how long you remain in a static position on the bike.