Super narrow Hyperglide chain with highly wear-resistant links. Shimano's Dyna-Sys system offers much more than just an additional gear. This system allows for closer gear spacing and more efficient power transfer. The CN-HG54 is a 10-speed chain that is directionally oriented, ensuring optimal shifting performance. The outer plates are optimized for smooth shifting on the chainrings, while the inner plates ensure clean shifts on the cassette. High dirt resistance is achieved through the specially shaped outer plates of this Hyperglide chain. The gray finish further emphasizes the high-quality design of this chain. The chain is not compatible with 10-speed road bike groupsets.