The Shimano Ultegra CN-6600 10-Speed Chain offers reliable performance with its Hyperglide 10-speed design, enhancing shifting precision and smoothness, especially on downshifts. Built to pair seamlessly with the Ultegra 6703 and 105 5703 triple setups, this chain is optimized for the HG sprocket, ensuring quick and accurate rear shifting. Its chromized rivet pins increase durability and resistance to wear, while the zinc-alloy plated outer link surface treatment further protects against corrosion, providing long-lasting performance.