Originally Posted by
86Allday
My bike is a 2007 i think, so it would most likely have 31.8. Ill just go to my local bike shop and ask if they would know. Thanks for the help.
I'm pretty sure all threadless stems are the same diameter. The only difference is where it clamps to the handlebars. It's either 25.4mm or 31.8mm and it's pretty easy to figure out with a tape measure through the process of elimination. If you take your bike into a bike shop they can tell you what you need. IME, you may need an extra small spacer if you swap the stem out