Road Cassette Shimano Ultegra CS-R8101 12v

Optimise your road performance with the Ultegra CS-R8101 12-speedShimano , a top-of-the-range cassette designed for discerning cyclists seeking smooth shifting, precision and efficiency. Part of the renowned Ultegra range, it incorporates the latest innovations from Shimano to deliver fast and reliable shifting, even under heavy strain.

Thanks to Hyperglide+ technology, this 12-speed cassette guarantees ultra-smooth gear changes, even when accelerating from a standstill or on steep climbs. You can change gears without easing off the pedals, ensuring a continuous effort and a noticeable gain in efficiency on all terrains.

Designed for versatility, the R8101 features optimised gear ratios (11–30 or 11–34 teeth) that allow you to combine cadence, power and comfort, whether on the flat or in the mountains. Its design combines high-tensile steel sprockets with aluminium brackets, offering an excellent balance between durability, lightness and stiffness.

Compatible with 12-speed Shimano drivetrains, whether mechanical or electronic, it is also compatible with HG 11- and 12-speed Shimano freehub bodies, making installation straightforward.

Key features:

• Smooth and precise 12-speed drivetrain

• Hyperglide+ technology for shifting under load

• Versatile gear ratios (11-30 / 11-34)

• Compatible with mechanical and Di2 drivetrains

• Excellent durability thanks to premium materials

Ideal for:

Road cyclists looking for a high-performance, reliable cassette suited to all types of riding, from intensive training to competition.

? With the Ultegra CS-R8101 Shimano e (equivalent to the R8100 cassette), enjoy a smoother, faster and more efficient riding experience, ride after ride.

Technical specifications

-
12-speed cassette - 11-tooth starter
- Material
- Hyperglide+ technology
- Gear ratios: 11/30 and 11/34
- Tooth spacing: 11/30: 11-12-13-14-15-16-17-19-21-24-27-30 and 11/34: 11-12-13-14-15-17-19-21-24-27-30-34T
- Weight: 11/30: 294 g and 11/34: 345 g (manufacturer)
- Brand: Shimano