Optimized gear combination and gear ratio. Wide range 11sp cassette sprocket 11-40T Rhythm step gear progression Optimal balance of lightweight and durability Combination of aluminum and steel gears HG-X11 specific tooth profile Made in Japan Without Retail Box Type Cassette Brand Shimano MPN Does not apply Number of Speeds 11 speed For Bike Type Mountain Bike UPC Does not apply Part Type Bicycle part .
eBay