Originally Posted by
Vintage_Cyclist
The Bicycling review of the 87 says 13-15-17-19-21-24, but I'd be inclined to go with a verified original bike; the test bikes could be specced differently from what hit the stores.
And that's what mine came with. (13,15,17,19,21,24) model number mf z012.
Unless you're the original owner or aquired the expert 87 from the original owner and asked what original parts have you replaced (for my own records). It would be difficult to verify what parts are original.