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

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 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 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. Compatibility Shimano 12-speed road drivetrains Compatible with Shimano 12-speed road chains Suitable for: Road Bikes Time Trial Bikes Triathlon Bikes Specifications Specification Details Model CS-R8101 Speed 12 Speed Technology Hyperglide+ Discipline Road, Training, Time Trial , Triathlon Colour Silver Material Steel sprockets with alloy carrier Ratios Available 11-30T, 11-34T 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. 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