Originally Posted by 70sSanO

While it is tough to judge purely by color scheme alone, that is not a 2001 WSD Trek 4900. All you have to do is go to the 2001 catalog. They also have the tech manual out there that gives all the geometry and a write-up on the WSD.

My wife has a 2001 Trek 8000. I was trying to remember if it was WSD or not. The WSD 8000 comes in 14", 16" and 18". The standard 8000 is 15.5", 17.5", 19.5" and 21.5". Hers is a 15.5".

The WSD 4900 comes in 14", 16", and 18". The standard 4900 comes in 13", 16.5", 18", 19.5", 21" and 22.5". For 18" sizes the tech manual will give the top tube length for each.

For Trek, at least 2001 mtb, size is based on the center of the BB to the top of the seat tube; the top tube is not a part of the measurement.

John