Shimano quality across a dozen gears? Sign us up! The Shimano Ultegra CS-R8100 12-Speed Cassette has no big jumps in gearing, giving you a perfect gear for every situation. And with long-lasting nickel-plated steel cogs, you’ll be able to enjoy that famous crisp shifting for thousands of miles.
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Material
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   Aluminum Carrier–        Reduces weight and increases rigidity.
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   Nickel Plated Steel Cogs
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Features
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   Hyperglide +–        Shift under load, up or down. Precise and beefy, this cassette shifts every dang time.
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   11-34T–        11-12-13-14-15-17-19-21-24-27-30-34T
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   11-30T–        11-12-13-14-15-16-17-19-21-24-27-30T
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Compatibility
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   Shimano 11- and 12-Speed Freehub Bodies
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   Shimano 11- and 12- Speed Drivetrain Components
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- Â Â Â Material: Â Â Â Aluminum, Steel
- Â Â Â Drivetrain Speed: Â Â Â 12-Speed
-    Biking Type:    Road, Gravel/Adventure, Urban/Commuter                                    RoadRoad bikes are designed for speed and efficiency on paved surfaces. They feature lightweight frames constructed from materials like carbon fiber or high-end aluminum. Equipped with narrow and smooth tires, road bikes minimize rolling resistance for swift longer-distance rides.                    Gravel/AdventureGravel/Adventure bikes are versatile machines designed for exploring mixed terrain, combining elements of road and mountain bike frames for comfort and stability. They offer traction and stability on various surfaces. Whether on gravel roads, light trails, or city streets, these bikes provide a perfect balance between comfort, performance, and versatility.                    Urban/CommuterUrban/Commuter bikes are purpose-built for navigating city streets with comfort and practicality in mind. Featuring frames designed for easy mounting and dismounting, often made of durable steel, these bikes prioritize reliability and ease of use with components like internally geared hubs or single-speed drivetrains for low maintenance.           Â
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| Size | Â Â Â Â Â Â Â Â Â Â Â 11-30T Â Â Â Â Â Â Â | Â Â Â Â Â Â Â Â Â Â Â 11-34T Â Â Â Â Â Â Â |
| Weight (g) | Â Â Â Â Â Â Â Â Â Â Â 291 Â Â Â Â Â Â Â | Â Â Â Â Â Â Â Â Â Â Â 345 Â Â Â Â Â Â Â |
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