I've never found a hardtail to be so much of a jarring feeling as a springy bounce. The frames have their own bounce to them and the seat just adds to it. Those springs undoubtedly absorb much of the shock, though. You don't feel the road like a go kart, for example. A taller rear tire is a factor in all of this, as well.brad black said:does that sort of springing on the seat really do much to take the jarring compression off your spine?