Abstract: A motorcycle trailer apparatus includes an elongated frame having first and second end portions, the first end portion carrying a detachable hitch for attaching the frame to the rear of a motorcycle. An arm assembly is pivotally attached to the frame at the second end portion. A single wheel is carried by the arm assembly. A shock absorber extends between the frame and the arm assembly at an inclined portion of the arm assembly. The shock absorber is inclined with its rear end portion being higher than the front end portion to provide an improved geometry for the combination of frame, arm assembly, shock absorber and wheel.