Number of gears
The cassette and chain on your road bike or mountain bike are some of the most important components on your bike. Unfortunately, they too wear out. In order to keep your bike running smoothly, you need to regularly replace your chain and cassette. How often that needs doing depends on the quality of your components. We've also got missing-links, powerlocks, and connecting pins so you can always fix your chain should it break during one of your rides.