Shimano Ultegra CS-R8101-12 Cassette Ruble 12 Speed ​​11-30T ICSR810112130

Shimano ULTEGRA CS-R8101 12-Speed ​​HYPERGLIDE+ Cassette | Revolutionary Shifting for Road and Gravel

A tangible example of Shimano's "Science of Speed" philosophy. The ULTEGRA CS-R8101 12-speed pulley is more than just a gear set; it's a technological marvel that radically changes the perception of shifting gears in road and gravel cycling. The new Ultegra R8100 And GRX RX820 This hoop, which lies at the heart of their groups, HYPERGLIDE+ By bringing its technology to the asphalt, it promises seamless and smooth gear changes even under maximum pedaling force. Here is a comprehensive description, rich in keywords for search engine optimization (SEO), that conveys all the technical details to your customer:

🚀 Technological Revolution: HYPERGLIDE+ Technology is on its way!

After proving its HYPERGLIDE+ technology on mountain bikes, Shimano is now bringing this revolution to the road. Traditional shifting required a brief release of pedal pressure, especially when shifting up (to a smaller gear) or under high torque. With HYPERGLIDE+, that's history.

• ⚡ Shifting Gears at Maximum Power: Now, at the steepest point of a climb or during a sprint, you no longer need to reduce your pedaling force to shift gears. NO NEED . The pulley's special tooth profile and chain guide channels allow the chain to shift smoothly and quickly between the gears. This... lossless power transmission and continuous acceleration It means...

• 🔄 Smoothness in Up and Down Gears: The technology delivers the same smoothness in both harder (towards smaller gears) and easier (towards larger gears) shifts. Especially when accelerating after a climb or pedaling against the wind, gear changes are almost imperceptible.

• 🎯 "Science of Speed" This doesn't just mean more gears, but more of every existing gear. maximum efficiency and control The goal is to achieve this. Instead of just controlling the bike, the rider can focus 100% on its performance and road conditions.

🔩 Smart Design: Backward Compatibility and Extended Gears

Shimano has struck the perfect balance to make innovation accessible:

• ♻️ Compatibility with existing FREEHUB bodies: CS-R8101 pulley, HG Spline L2 Road 12-speed and existing HG Spline L Road 12/11-speed FREEHUB body It is compatible. This means you can shift to 12-speed without upgrading most modern 11-speed wheels or rear hubs. IMPORTANT NOTE: For use with 11-speed HG frames, the largest 1-2 teeth on the pulley are not a single piece but an aluminum structure mounted on a carrier (spider). This saves weight and maintains compatibility.

• ⛰️ Two Optimal Gear Ratio Options:

  • 11-30T: More road Ideal for performance and speed-focused riding. The tightly spaced gears (11-12-13-14-15-16-17) allow you to maintain your cadence (pedal speed) on both flat and undulating terrain.

  • 11-34T: Gravel And challenging climbing trails It's a perfect choice. The large 34T gear ratio allows you to climb steep hills more easily, while HYPERGLIDE+ technology smooths the transition between these large gears.

• 🔗 Compatible Chain: To achieve the best performance with this pulley Shimano CN-M8100 series 12-speed HG chain Its use is strongly recommended.

🏆 Usage Area and Group Compatibility: The New Center of Performance

• Use: Road And Gravel It was specially designed for bicycles.

• Perfect Group Harmony: Shimano Ultegra R8100 (mechanical and electronic) and Shimano GRX RX820 This is the direct and original pulley for 12-speed gear sets.

• Cross-Compatibility: Although HYPERGLIDE+ technology is compatible with other 12-speed Shimano groupsets (Dura-Ace, 105), it offers the most optimized performance within its own group.

📊 Materials, Weight, and Technical Details

• Material:

  • Sprockets: For high durability Steel .

  • Spider Arm: For weight savings Aluminum (More in 11-30T, for the largest gears in 11-34T).

  • Lock Ring: Aluminum .

• Weight (Manufacturer's Declaration):

  • 11-30T: Approximately 291 grams (Light road performance).

  • 11-34T: Approximately 345 grams (Lightweight thanks to extra gear ratio).

• Gear Arrangement:

  • 11-30: 11-12-13-14-15-16-17-19-21-24-27-30

  • 11-34: 11-12-13-14-15-17-19-21-24-27-30-34

📦 Package Contents:

• 1 x Shimano ULTEGRA CS-R8101 12-Speed ​​HYPERGLIDE+ Pulley

• 1 x Aluminum Lock Ring

Manufacturer Stock Code (P/N): ICSR810112130
Barcodes (Stock & Sales Tracking):

• EAN: 4550170849894

• UPC: 192790849898

🎯 Who would this pulley be a perfect upgrade for?

• For Ultegra R8000 or 105 11-speed users: For those who want to experience HYPERGLIDE+ technology and the extra range of 12th gear, often without needing a new rear hub.

• Gravel adventurers: For those who want to upgrade their GRX RX820 or their existing 11-speed gravel bike with a wider gear ratio and seamless shifting.

• Racers and performance enthusiasts: For those seeking maximum efficiency and shifting confidence with every pedal stroke during competitions or demanding training sessions.

• For tech enthusiasts: Cyclists who want to experience the latest revolution in gear shifting firsthand.

Final Words: The Shimano ULTEGRA CS-R8101 does much more than just add a gear: It redefines the gear shifting experience. It's one of the smartest investments for a smarter, faster, and more reliable ride. You can guarantee your customers that with this pulley, they'll never again have to think about "reducing pedal pressure to shift gears."