I have a 120 mm 90 degree stem (quill) and would like a little less reach. I figured I could get a taller stem with a bit higher angle or an adjustable stem, but I'm having trouble identifying the correct size.
The specs from the bike say 24.5 mm insertion, 24.5 mm clamp. My understanding is that this means it is a 1 1/8" stem with a standard mtn bike clamp. I'm quite confused by the 1" vs 1 1/8" thing, and want to be sure I get the right size. I have not yet removed the existing stem to measure the opening, but how does the opening size relate to the stem size?
Bike is a 90s gary fisher Nirvana rigid mtn bike similar to
this.