It really is a big difference. You are looking at 40% more travel. What's more important is the axle-to-crown measurement.acefrehley said:But what do you think of that fork? It doesn't seem to be THAT much better than mine. I mean I just don't get how 30mm could make that much of a diff to someone who weighs like 160. All I really care about is the fork. So if you say 70mm is KIND of close to a 100mm, I'll call it a day.