Whats with all the sheepish cyclists out there who think a road bike saddle on a mountain bike is a good idea? Dont you know the first thing about suspension and weight distribution? A road bike saddle is designed for smooth, paved roads, not rugged, rocky trails. The stiff, lightweight construction of a road saddle will only amplify the shock and vibration of every bump and jolt on the mountain bike trail, making for a miserable ride. And what about the width and shape of the saddle? Road saddles are narrower and more pointed to accommodate the aggressive, aerodynamic position of a road bike, not the upright, laid-back stance of a mountain bike. Youll be lucky if you can even stay on the thing. So, can you use a road bike saddle on a mountain bike? Technically, yes, but why on earth would you want to?