internal member 82 lowering the amount of slippage in the area where adhesion induced friction occurs reducing the likelihood that the first elastic members 83 will be worn down and making it possible to inhibit wear induced variations in the shock absorption performance in this embodiment the second elastic members 84 are made of substantially plate shaped elastic bodies mounted for the purpose of applying pressure to the first elastic members and inhibiting the collision noise resulting from contact between the two protrusions 92 and 102 urethane rubber nitrile rubber polyethylene elastomer and the like are preferred for use in such elastic bodies the other radially extending side surfaces 92 b of the first protrusions 92 and the other radially extending side surfaces 102 b of the second protrusions 102 face each other in a substantially parallel fashion in a state in which pressure is exerted by the second elastic members 84 on the first elastic members 83 consequently the gaps between the other radially extending side surfaces 92 b of the first protrusions 92 and the other radially extending side surfaces 102 b of the second protrusions 102 remain unchanged and the pressure applied to the first elastic members 83 is less likely to vary when the second elastic members 84 slip in the radial direction here applying pressure to the first elastic members 83 suppresses the movement of the suspension assembly 14 under the weight of the rider when the latter mounts the bicycle the link mechanism 86 has a first bushing 110 made of a synthetic resin and fixed to the external member 80 and a second bushing 112 made of metal disposed around the outside of the first bushing 110 and fixed to the internal member 82 polyacetal resins nylon teflon registered trade name and.