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SHIMANO

Shimano 105 CS-R7101 12-Speed Cassette

Shimano 105 CS-R7101 12-Speed Cassette

HK$360.00 HKD
HK$360.00 HKD
Sale Sold out
Gear Combination

Product Overview

Hyperglide+ performance. Wide-range versatility. Exceptional value.

The Shimano 105 CS-R7101 is the 12-speed cassette from Shimano's legendary 105 R7100 series—the groupset that democratised electronic shifting and brought WorldTour-level performance to a wider audience. Engineered for riders who demand crisp, reliable shifting across all terrain, this cassette delivers the same Hyperglide+ technology found on top-tier Dura-Ace and Ultegra groupsets at a price point that makes premium performance accessible.

Whether you're sprinting on the flats, grinding up steep alpine climbs, or chasing a personal best on rolling terrain, the CS-R7101's refined 11-34T gear combination provides the perfect balance of range and cadence control.

Key Features

⚡ Hyperglide+ Technology – Faster Shifting, Even Under Load

  • Computer-designed tooth configuration with contoured shift gates ensures crisp, smooth shifts even under maximum load

  • Up to 1/3 faster shifting compared to previous 11-speed systems

  • Shifts are so smooth they're barely noticeable—even when standing on the pedals

🏔️ Wide-Range 11-34T Gear Ratio

  • Refined 12-step gear combination provides peak efficiency and accelerating performance for every situation

  • 34-tooth largest sprocket conquers the steepest climbs

  • Finer cadence control through close-ratio gearing allows more efficient use of energy

🔧 Universal Freehub Compatibility – Upgrade Without Hassle

  • Compatible with both SHIMANO 11-speed and 12-speed FREEHUB bodies

  • Same width as an 11-speed cassette—no need to change your wheels

  • Perfect for upgrading existing 11-speed bikes to 12-speed

🎯 Universal Groupset Compatibility

  • Unlike the CS-R7100, the CS-R7101 is compatible with both electronic and mechanical groupsets

  • Works seamlessly with Shimano 105 Di2 (R7150), mechanical 105 (R7100), Ultegra, and Dura-Ace

🛡️ Premium Construction – Built to Last

  • Nickel-plated steel sprockets offer hard-wearing corrosion resistance

  • Largest sprockets mounted on a lightweight aluminium spider to reduce weight and increase rigidity

  • Cut-away and drilled sprockets further reduce weight without compromising rigidity

  • Pearl-bright steel lockring included

Specifications



Specification Detail
Model No. CS-R7101-12
Series SHIMANO 105 R7100
Speeds 12
Type HG (Hyperglide+)
Gear Combination 11-34T
Sprocket Teeth 11-12-13-14-15-17-19-21-24-27-30-34T
Average Weight 361g
Spline Type HG spline L2 (ROAD 12-speed dedicated)
Freehub Compatibility SHIMANO 11-speed & 12-speed road freehub bodies
Spider 1× aluminium spider arm
Material Steel sprockets (nickel-plated), aluminium spider (anodised)
Compatible Chain HG 12-speed (CN-M9100 / CN-M8100 / CN-M7100 / CN-M6100)
Colour Silver

Compatibility

✅ Compatible With:

Groupsets:

  • Shimano 105 R7100 (mechanical) & R7150 (Di2)

  • Shimano Ultegra R8100 / R8170

  • Shimano Dura-Ace R9200 / R9270

Shift/Brake Levers:

  • ST-R7120, ST-R7170, ST-R8150, ST-R8170, ST-R9250, ST-R9270

Rear Derailleurs:

  • RD-R7100, RD-R7150, RD-R8150, RD-RX820, RD-R9250

Chains (recommended):

  • CN-M9100 (XTR), CN-M8100 (XT), CN-M7100 (SLX / 105), CN-M6100 (Deore)

Freehub Bodies:

  • SHIMANO 11-speed road freehub bodies

  • SHIMANO 12-speed road freehub bodies (HG L2)

Why Choose Shimano 105 CS-R7101?



CS-R7101 (105) CS-R8101 (Ultegra) CS-R9200 (Dura-Ace)
Weight 361g ~346g ~223g (11-30T)
Sprocket Material Nickel-plated steel Nickel-plated steel Titanium/Steel/Aluminium
Spider Aluminium Aluminium Carbon/Aluminium
Freehub Compatibility 11s & 12s 11s & 12s 12s only
Price ⭐⭐⭐⭐⭐ Best value ⭐⭐⭐⭐ Mid-range ⭐⭐⭐ Premium
Best For Value-focused riders / Upgrades Enthusiasts Racers / Ultimate performance

"With only about 15 grams more weight than the Ultegra model, it offers fast and smooth shifting, even when you pedal hard."

What Riders Are Saying

"Great alternative to the more expensive Ultegra variant." — Mantel Customer

"Reliable shifting performance and high shifting speed even when you're standing on the pedals." — Mantel

"Quickly replaced, previous one lasted 8000km." — Mantel Customer

"Even under maximum load, faster gear changes are possible with the CS-R7101-12, which also feel so smooth that gear changes are barely noticeable." — BIKE24

What's in the Box

  • Shimano CS-R7101-12 Cassette × 1 (11-34T)

  • Shimano steel lockring × 1

Technical Notes

⚠️ Freehub Compatibility: Compatible with both SHIMANO 11-speed and 12-speed road freehub bodies

⚠️ Chain Compatibility: For optimal performance, use with SHIMANO HG 12-speed chains (CN-M9100 / M8100 / M7100 / M6100)

⚠️ Spline Type: Uses HG spline L2—dedicated 12-speed road spline with specific engagement features

⚠️ Installation: Requires a cassette lockring tool and chain whip. Torque lockring to 40 Nm

⚠️ Maintenance: Nickel-plated finish offers hard-wearing corrosion resistance—clean regularly with degreaser and re-lubricate

⚠️ Lifespan: Typical lifespan 5,000–8,000km depending on riding conditions and maintenance

About Shimano 105

First launched in 1982, Shimano 105 has been the choice of dedicated amateur riders and enthusiasts for over 40 years. For its 40th anniversary, 105 received its ultimate upgrade with 12-speed Di2 electronic shifting. The CS-R7101 cassette continues this legacy—bringing the same Hyperglide+ technology, refined gear ratios, and exceptional reliability found on top-tier groupsets to a price point that makes premium performance accessible to every rider.

Upgrade to 105-level drivetrain performance. Add the Shimano CS-R7101 to your cart today!

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