Must use 9-speed chain
Reduced cog spacing: 9-speed is same overall width as 8-speed
Aluminum carrier reduces weight and increases rigidity
It is 176 grams
Shimano and SRAM 9 speed compatible
Shimano Ultegra CS-6500 9-speed Cassette-11/23-No-Colr

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 5.3 inch
Height : 2.4 inch
Length : 6.2 inch

Item Weight: 10.08 ounce (View shipping rates and policies)
Shipping Weight: 14.4 ounce (View shipping rates and policies)

ASIN : B000F5EFM4