i have a really like to travel by my bike. But all you know, travelling with a bike is really difficult if you use a random bike. So i want to buy a bike. I searched the internet and i learned that 2 bike name >> Mongoose mountain bike and schwinn mountain bike. Both of them have good quality. And i decided to buy Mongoose. Now i have one but i want to add it some gear. i heard that shimano bike gears. Do you know something about this? i need your help :S