I bought this from a friend who needed money. I don't really need a mountain bike so I plan to sell it. The problem is, I don't know what model it is. I've looked at pictures of all different kinds of Cannondale bikes and I see several models that look like this... F400's, F500's, M300's - they all look alike (at least to the untrained eye).
Can anyone help? The only numbers I've found on the bike are on the bottom of the frame, under the crank. They are as follows: F1088 ; 09250 ; B5W17
Thanks in advance!