Ultegra 11-30 12 speed cassette

The latest 12-speed cassette from Shimano in the Ultegra series, just below the top model Dura Ace. The cassette is designed for Shimano's new Spline system, which creates a larger contact area between the cassette and the cassette hub for better power transfer. It can also be used on 11-speed HG cassette hubs.

Unlike 11-speed cassettes, you get a more even gear ratio, especially the so-called "sweet spot gears" have smaller gaps between them. The tooth profile is also different, ensuring more consistent shifting even under high load.

• 12 speed: Latest technology for optimal performance.
• Spline system: Better power transfer and compatibility with 11-speed HG cassette hubs.
• Even gear ratio: Smaller gaps between gears for a smoother ride.
• Improved tooth profile: More consistent shifting under high load.
• Number of teeth: 11-30T