ULTEGRA / CS-R8101-12 / 11-34
Rearspeeds: 12-Speed
Range: 11-34
Gears: 11-12-13-14-15-17-19-21-24-27-30-34
Freehub compatibility: Hyperglide+ (12 Speed Road)
Weight: 345 g
Cog material: Steel
Level/Series: ULTEGRA
Usecase: Road