If a standard mountain bike hub size is 135mm or 130mm, where do you get that measurement? As in the distance from point A to point B. I need to verify the hub size on my bike's stock hubs, but I don't know where the 130mm or 135mm measurement is coming from, so I can't verify the hub size.
I just bought a 2009 Specialized Rock Hopper 29er but I can't find any documentation stating the size of the hubs.
Your rear hub spacing is 135. The measurement is the distance from outer edge of locknut(the nut that touches the inside of the dropout) to outer edge of locknut. Sheldon Brown's website is invaluable for inquiries like this.