You'll lose travel as well. From 6" down to 4.8" or so, if you go to a 7.5x2 shock, which is the next typical size down. You may also have issues with the tire hitting the seat tube or saddle at full compression.Sachem6 said:I have an '07 Iron Horse Sachem 6.0 with 6" of travel and a Fox Vanilla rear shock. The shock is a 7.875 x 2.25. Is it possible to put on a shorter shock to slacken the head angle? If so what size? I would only want about 1 degree.