Videos Watch: 7 More Mountain Bike Rules That Should Be Broken By Global Mountain Bike Net April 15, 2019 GMBN says, “Don’t worry if you’re riding a tired old 26-inch hardtail in jorts and a BMX helmet. Mountain biking is about having fun first and foremost and you can do that no matter which bike you are riding. Break those rules. Get out and ride!” Share This: Tweet Global Mountain Bike Net Not much is known about Global Mountain Bike Net, though the legend grows each day. Subscribe! Enter your email address to receive our top stories via email each week.