For 11- or 12-speed systems, you should replace the chain when it reaches 0.5% stretch . For 9-speed systems or lower, you can usually wait until 0.75% .
Higher-end chains aren't necessarily "stronger" in terms of breaking strength, but they feature nickel or titanium-nitride coatings to resist corrosion and reduce friction. Premium chains also often use hollow pins to shave weight without sacrificing integrity. 3. Sizing and Installation how to buy a bike chain
Pay attention to how the chain closes. Most modern chains use a "Master Link" or "PowerLock" (a tool-free connecting link), while some Shimano models still utilize a specific connecting pin that must be snapped off with pliers. 4. The Replacement Threshold For 11- or 12-speed systems, you should replace
The most critical factor is the of your drivetrain. Modern cassettes range from 1 to 12 (and occasionally 13) gears. As the number of gears increases, the space between the cogs on your rear wheel decreases. To accommodate this, chains for higher speeds are made progressively narrower. Premium chains also often use hollow pins to
A 12-speed chain is significantly thinner than an 8-speed chain. Using a chain with the wrong width will result in it getting stuck between cogs or failing to shift entirely.