A harness racing sulky has a chassis frame comprising an elongated, horizontal, transverse member and two vertically disposed, generally U-shaped members located below and at the ends of the elongated, horizontal, transverse member. Each U-shaped member comprises a rearwardly inclined back leg joined to the respective end of the elongated, horizontal member. Two approximately parallel shafts extend forward from the chassis frame. The rear end of each shaft is joined to the rear leg of a respective U-shaped member. The front leg of each U-shaped member is joined to a respective shaft forward of the rear of the shaft. Wheels are rotatably mounted to the inverted apex of each U-shaped member. The axes of each wheel are coincident. The elongated, horizontal, member is located to the rear of the coincident axes of the wheels.