Bike is a best thing in the world .bike can easily control by people so need to modify the gear system in the bike .easy to transfer and fast thats why it is made .so may people have bike but some people dont know how to ride a bike and how to control a bikegear.who know about the bikegear we need to ask him tow to ccontrol a bike with bikegear .bike is easy to ride and easy ho control .thats why it is famoun .