Experience lightning-fast, seamless shifting under any load with the Shimano Ultegra CS-R8100 12-speed cassette, engineered to deliver unparalleled performance for high-performance road cycling.

The Shimano Ultegra CS-R8100 12-speed cassette is the definitive centerpiece of a performance-oriented road drivetrain. Featuring Shimanos revolutionary Hyperglide+ technology, this cassette is meticulously designed to provide smoother, faster shifts both up and down the cassette, even when pedaling under extreme power. The versatile 11-30t gear range offers an excellent balance of close-ratio cogs for maintaining speed on the flats and a large 30-tooth cog for conquering steep climbs. Constructed with a blend of lightweight aluminum and durable steel cogs, this cassette ensures a high-end feel, long-lasting performance, and the responsive feel you expect from the Ultegra platform.

• Shimano Hyperglide+ technology enables faster and smoother shifting under load.
• Versatile 11-30t gear range, ideal for a mix of fast flats and challenging climbs.
• Designed for Shimano 12-speed road drivetrains.
• Lightweight and durable construction with a blend of aluminum and steel.
• Optimized for use with the Shimano Ultegra R8100 series drivetrain.