Shimano SLX/105 12 Speed ​​chain 126L - CN-M7100

The bicycle chain is one of the most underrated, yet crucial parts of a bike. Whether you’re riding on the road, gravel or training for a triathlon, the chain is the element that transfers your power from the pedals to the rear wheel. A good chain ensures efficient power transfer, low friction and reliability – which is why it’s worth considering both quality and maintenance if you want to get the most out of your bike.

Although the chain may seem like a simple component, it has a huge impact on how your bike feels and performs. A worn or dirty chain can result in slower gear shifts, more noise, poorer performance and, in the worst case, increased wear on your crankset and cassette. So it’s not just a question of durability – it’s also about speed, comfort and reliability.

If you’re looking to optimize your bike and squeeze a few extra watts out of every thread, upgrading your bike chain is actually one of the most effective and affordable places to start. Modern chains vary in weight, friction, and treatment, and many manufacturers offer chains with lower rolling resistance and higher efficiency. For the dedicated rider, this can mean measurably fewer watts used – and therefore higher speed for the same effort.

Chains are available with special coatings, optimized links and advanced materials that reduce friction and improve durability. Some models come pre-lubricated with wax or ceramic particles, providing a lightning-fast and silent experience on the road. Whether you prioritize wattage savings, long durability or low weight, there is a chain to match your needs.

A chain upgrade not only improves performance – it can also improve gear shifting precision and minimize the risk of unexpected dropouts at crucial times, such as during competition. A well-lubricated and properly tensioned chain is essential for both comfort and efficiency on the bike.

When choosing a new bike chain, the first thing you should do is make sure it fits your drivetrain. The number of gears (e.g. 10, 11 or 12-speed) determines the width and compatibility of the chain. It may also be worth considering whether you want to prioritize low friction, long life or a specific weight target. There are chains that excel in different parameters – and it's all about finding the right balance for your specific needs.

If you train many hours a week, it may make sense to choose a durable chain with a focus on durability. If, on the other hand, you are chasing marginal gains for competition, an optimized and friction-reduced chain is an obvious choice. There are also chains that are specifically designed to work optimally with electronic gear systems, ensuring lightning-fast and precise shifts even under load.

It’s also important to consider maintenance. A good chain requires regular cleaning and lubrication – especially if you ride in wet or dusty conditions. By taking care of your chain, you can significantly extend both its lifespan and the lifespan of the rest of your drivetrain.