The CS-6600 is the suitable cassette for Ultegra 10-speed group.

HG
The distinctively designed HYPERGLIDE sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result. The HG cassette sprocket, which was developed for 10-speed system, underwent comprehensive optimization to achieve super-highly efficient shifting.

Specifications

• Group: Ultegra
• Model: CS-6600
• Type: HG
• Gear: 10-speed
• Compatible chain: HG 10-speed
• Weight: 235 g (12-23)
• Gearing: 14-15-16-17-18-19-20-21-23-25 teeth

Scope of delivery

• 1 Ultegra CS-6600 Cassette incl. Lock Ring Steel