Mechanics Classes MRBC offers a series of basic bicycle repair classes, followed by the option to enroll in our Earn-a-Bike Program. Afternoon classes will be offered for elementary, middle, and high school students. Youth under 12 will need a permission form to participate in on-going programs. Adult classes (ages 16+) are held on weekends; we offer both co-ed classes and a women’s only class. No prior experience necessary!!! Over the 7-week course, you will learn how to: perform a safety check on your bike take wheels off & put them back on change a flat tire adjust your seat & handlebars adjust brakes adjust derailleurs true wheels replace rusty chains & cables answer any specific questions you have about maintaining your bicycle!