Smooth Shifting 9-Speed HG Sprocket Design
9-speed performance from precision HG sprockets and super-narrow chain.
No increase in cassette width allows retrofit to 8-speed freehubs.
Light Alloy Sprocket Carriers
The Ultegra cassette sprockets (CS-6500) use a light alloy sprocket carrier to mount the three lowest gears. Reduced weight, increased rigidity, and better shifting result.
Lightweight Design
The light alloy sprocket carrier(CS-6500)and drilled out sprockets result in a 9-speed sprocket cluster that actually weighs less than the previous 8-speed.
* Total Interchangeability / The use of identical drive train specifications allows complete interchangeability between 105, Ultegra, and Dura-Ace components.
Group Identification -
Sprocket Finish luster silver & chrome plated
Speeds 9-speed
Weight 210g (12-23T)