I have a suspension front fork on my Specialized Crostraill Disc. I have locked it about twice since I got the bike, but now I keep it unlocked all the time. My bike is a hybrid. It's not geared like a mountain bike, and it's not stiff and crouched like a road bike. It is designed for running through curbs, pits, rocks, gravel, holes, AND some smooth pavement. What my bike is suited for, it does very well. If I wanted a stiff fork, I would have purchased a road bike with dropped bars instead.