PowerLock®
SRAM chain engineers developed PowerLock® as a secure and consistent way to connect SRAM chains without the use of tools. Although PowerLock® does not require special tools for assembly, given the tight range of tolerances of a 10, 11, and 12-speed chain, each PowerLock® should be used only once.

Flow Link™
The ultra-smooth inner link plates are completely free of sharp edges. This reduces friction on the cassette and chainring. The result: quiet performance and increased component life. The design allows for a narrower profile. In this way, the chain is more resistant to twisting....