You’ll find several types of bottle cages out there. Most of them come with pre-drilled holes that you can easily mount on your bikes. Also, note, there are several areas where you can mount your bottle cages at your convenience. For instance, you can install them on the handles, or even in the middle of the down tube. However, this depends on your personal preference. However, we recommend that you install them in a place where you can easily access your bottles.