8, 10, 12 mm wrenches and/or sockets for just about every other bolt. I have done more roadside repairs than I'd like to admit but I carry complete metric wrench set, 1/4 and 3/8 ratchet with a few select sockets. 19,17,10,8 mm. A few zip ties, couple extra bolts and electrical tape and jammed into a small bag. Seems to work. Extra cdi and coil/wire lives in the old airbox.
http://pi.roostin.com/images/items/9.../X001-Y001.jpg