Shimano Ultegra FC-R8000 – 50T Outer Chainring, 11-Speed
The Shimano Ultegra FC-R8000 50T outer chainring is a genuine Shimano replacement component designed for the Ultegra R8000 11-speed road crankset.
Featuring Shimano's HOLLOWGLIDE construction, this outer chainring combines a lightweight design with excellent rigidity to support efficient power transfer and precise front shifting.
The 50-tooth MS version is specifically designed to work with a matching 34-tooth inner chainring, creating a compact 50/34T configuration suitable for a wide range of road cycling conditions.
Key Features
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50-tooth outer chainring: Designed for the Shimano Ultegra FC-R8000 crankset.
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11-speed drivetrain: Developed for Shimano 2x11-speed road transmissions.
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HOLLOWGLIDE technology: Hollow outer chainring construction for improved rigidity and reduced weight.
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Compact gearing: Designed for a 50/34T chainring combination.
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Optimized front shifting: Engineered for smooth and precise transitions between chainrings.
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Genuine Shimano replacement part: Helps restore the original performance of a compatible crankset.
Technical Specifications
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Brand: Shimano
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Series: Ultegra R8000
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Model: FC-R8000
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Product type: Outer chainring
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Manufacturer part number: Y1W898020
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Shimano designation: 50T-MS
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Number of teeth: 50T
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Drivetrain compatibility: 2x11-speed
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Recommended chainring combination: 50/34T
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Matching inner chainring: Shimano 34T-MS (Y1W834000)
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Bolt circle diameter (BCD): 110 mm
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Mounting interface: Shimano four-arm crankset
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Technology: HOLLOWGLIDE
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Application: Road cycling
Compatibility
This chainring is officially listed by Shimano for the Ultegra FC-R8000 crankset.
The 50T-MS outer chainring should be paired with the corresponding 34T-MS inner chainring for optimal front shifting.
Other Shimano chainrings may share the same 110 mm bolt circle diameter but differ in shape, mounting details and shifting design. Always verify compatibility using the exact Shimano part number.
Replacement and Maintenance
Replacing a worn chainring helps maintain efficient power transfer and reliable front shifting.
Inspect the chain, cassette and inner chainring for wear when replacing drivetrain components. Follow Shimano's installation instructions and tightening torque specifications.
Note: This product includes the replacement 50T outer chainring only. The crankset, inner chainring and other drivetrain components are not included.
