Description

Shimano Ultegra R8101 12 Speed Road Cassette 11-30T / 11-34T HG+ Lightweight Hyperglide+ Silver

Upgrade your drivetrain with the premium  Shimano Ultegra R8101 12-speed cassette, designed to deliver lightning-fast shifting performance, reduced weight, and exceptional durability for road cyclists, racers, time trial specialists, and triathletes.

Featuring advanced Hyperglide+ technology, the CS-R8101 cassette provides smooth, precise gear changes even under heavy pedalling loads, allowing riders to shift confidently during climbs, sprints, and high-speed efforts without interruption.

Available in both 11-30T and 11-34T ratios, the Ultegra R8101 offers a versatile gearing range to suit everything from fast-paced racing to challenging mountainous terrain.

Key Features

✔ Genuine Shimano Ultegra R8101 12-Speed Road Cassette
✔ Available in 11-30T and 11-34T gear ratios
✔ Advanced Hyperglide+ (HG+) technology for ultra-fast shifting
✔ Optimised sprocket tooth profiles for smoother gear engagement
✔ Lightweight alloy sprocket carrier reduces overall cassette weight
✔ Excellent shifting performance under load
✔ Improved durability and reduced drivetrain wear
✔ Compatible with Shimano 12-speed chain
✔ Finished in a premium silver colourway
✔ Suitable for Road, Time Trial and Triathlon bikes

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Hyperglide+ Technology

Shimano’s renowned Hyperglide+ technology allows riders to shift both up and down the cassette more smoothly and efficiently than previous generations. Redesigned tooth profiles improve chain retention and engagement, resulting in:

• Faster shifting under power
• Reduced drivetrain noise
• Improved pedalling efficiency
• Lower chain and sprocket wear
• Increased confidence during racing and climbing

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Available Ratios

11-30T

Ideal for racers and strong riders looking for closely spaced gears and smooth cadence transitions.

11-34T

Perfect for sportive riders, climbing enthusiasts and anyone tackling steeper gradients while maintaining excellent top-end speed.

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Compatibility

• Shimano 12-speed road drivetrains
• Compatible with Shimano 12-speed road chains
• Suitable for:
  • Road Bikes
  • Time Trial Bikes
  • Triathlon Bikes

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Specifications

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Why Choose Shimano Ultegra R8101?

The Ultegra R8101 cassette delivers much of the performance found in Shimano’s flagship Dura-Ace groupset while offering exceptional value and durability. It is the perfect choice for riders wanting professional-level shifting performance without compromise.

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Why Choose Hopkinson Cycles?

✅ Free UK postage available on thousands of products
✅ Family-run independent bike shop with decades of cycling experience
✅ Professional technical advice from real cyclists
✅ Friendly customer service from real people
✅ Huge range of genuine cycle components and accessories
✅ Fast dispatch from our Yorkshire store
✅ Trusted by thousands of cyclists across the UK

📞 Tel: 01924 274209
📧 Email: info@hopkinsoncycles.com
🌐 Website: Hopkinson Cycles Official Website
📍 Queen Street, Horbury, Wakefield, WF4 6LP

Shimano Ultegra R8101