Shimano Ultegra CS-R8000 – 11-Speed Road Cassette, 11-30T
The Shimano Ultegra CS-R8000 is an 11-speed road cassette designed to deliver precise, consistent shifting and versatile gearing for performance-oriented cyclists.
Its 11-30T gear range combines closely spaced sprockets for maintaining a steady cadence on flat roads with larger sprockets that provide easier gearing on climbs.
Engineered for the Shimano Ultegra R8000 groupset, this cassette features HG-EV technology, nickel-plated steel sprockets and lightweight sprocket carriers for a balance of durability, performance and weight.
Key Features
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11-speed road cassette: Designed for compatible Shimano 11-speed road drivetrains.
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11-30T gear range: Versatile gearing for flat roads, rolling terrain and climbs.
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HG-EV technology: Optimized sprocket profiles support smooth, precise shifting.
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Nickel-plated steel sprockets: Durable construction with corrosion-resistant finishing.
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Lightweight sprocket carriers: Aluminum and carbon components help reduce weight.
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HG freehub compatibility: Designed for compatible Shimano HG road 11-speed freehub bodies.
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Ultegra performance: Engineered to complement Shimano Ultegra R8000 components.
Technical Specifications
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Brand: Shimano
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Series: Ultegra R8000
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Model: CS-R8000
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Manufacturer reference: ICSR800011130
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Product type: Rear cassette
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Rear speeds: 11
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Gear range: 11-30T
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Individual sprockets: 11-12-13-14-15-17-19-21-24-27-30T
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Technology: Hyperglide EV (HG-EV)
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Freehub interface: Shimano HG spline L (road 11-speed)
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Sprocket material: Nickel-plated steel
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Sprocket carriers: Aluminum and carbon
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Lockring: Anodized aluminum
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Compatible chains: Shimano HG 11-speed and compatible LINKGLIDE 11-speed chains
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Average weight: 269 g
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Application: Road cycling and compatible mixed-surface drivetrains
Precise Hyperglide Shifting
Shimano HG-EV technology uses carefully designed sprocket profiles to guide the chain smoothly between gears.
When paired with compatible Shimano shifters, derailleurs and chains, the CS-R8000 provides responsive and dependable shifting for road riding.
Versatile 11-30T Gearing
The 11-30T configuration offers a practical balance between closely spaced ratios and climbing capability.
Its eleven sprockets are arranged as follows:
11 – 12 – 13 – 14 – 15 – 17 – 19 – 21 – 24 – 27 – 30T
The closely spaced smaller sprockets help maintain cadence on faster sections, while the 30-tooth largest sprocket provides an easier climbing gear.
Compatibility
The CS-R8000 requires a compatible Shimano HG road 11-speed freehub body and an appropriate 11-speed drivetrain.
Before installation, confirm the rear derailleur's maximum supported sprocket size, total capacity and chain compatibility.
The cassette is not compatible with Shimano Micro Spline freehub bodies and does not mount directly to threaded freewheel hubs.
Installation and Maintenance
Install using the appropriate cassette tools and Shimano's recommended lockring tightening torque.
Inspect chain wear when replacing the cassette to maintain optimal shifting and drivetrain performance.
Note: This product is the Shimano Ultegra CS-R8000 cassette in the 11-30T configuration.
