Shimano bicycle cassette CS-R8101 Ultegra 12rz 11-34T (ICSR810112134)

The Shimano CS-R8101 Ultegra 12-speed 11-34T cassette allows for precise and smooth gear shifts on the road, thanks to Shimano's advanced engineering. The 11–34T range and 12-speed design meet the needs of demanding road cyclists during intense training and racing.

HYPERGLIDE+ technology for efficient gear shifting

The design of the cassette is based on HYPERGLIDE+ technology, which ensures ultra-fast and stable gear changes both under load and during high cadences. The precisely shaped ramps and teeth guarantee effective chain movement between sprockets, translating to a silent and smooth drivetrain operation. The Shimano CS-R8101 Ultegra maintains high drivetrain performance even in the toughest racing conditions.

Durable materials

The cassette is manufactured from steel and aluminium, combining optimal strength with low weight. The precisely machined steel sprockets feature high wear resistance, while the aluminium components help reduce the total weight. This material composition makes the model reliable during intense road use.

Construction parameters and gear range

The CS-R8101 Ultegra cassette offers 12 speeds and a wide gear range of 11–34T, allowing for drivetrain adaptation to various terrain profiles and riding styles. The distribution of sprockets ensures smooth shifts between gears, appreciated by both professionals and aspiring amateurs. The cassette is compatible with Shimano/SRAM freehubs, facilitating integration with popular drivetrain systems.

Shimano CS-R8101 Ultegra 12-speed 11-34T cassette - features:

• HYPERGLIDE+ technology ensures smooth gear shifting under load;
• Steel sprockets provide high wear resistance;
• 12-speed design enables precise drivetrain adjustment;
• Gear range of 11–34T for varied terrain profiles;
• Compatibility with Shimano/SRAM freehubs aids installation;
• Smooth and silent drivetrain operation even at high cadences;
• Machined ramps and teeth for quick chain movement;
• Designed for road bikes that require high performance;
• Durable construction ideal for intense training.