The present invention is a support wheel adjustment mechanism for a bicycle provided on either side of bicycle. Each support wheel mechanism includes a first element, a second element, a swivel hinge connection, an adjustable element and a fixing element. First element and second element are connected with each other by swivel hinge connection. Adjustable element has one end portion connected with hinge connection with first element and another end portion is selectively connected to any of adjustment openings such that support wheels are achieves desired elevation from ground. Adjustable element is secured in adjustment openings by use of fixing element.