This bike came w/full Shimano 105 group. Might be fun to update it to a full modern 105 group, kind of keep it in the spirit of things. But I have to finish other projects first. This bike also sort of has a bit of nostalgia for me, a 1985 Trek 660 was my main ride for most of the second half of the 80's, the frame on the 87 560 is same tubeset and geometry seems identical except for .4 inch greater fork offset.