What Is It?
The Shimano FC-R8000 50T-MS Chainring is a genuine replacement outer chainring for the Shimano Ultegra FC-R8000 11-speed road crankset with a 50-34T compact gearing. Engineered with Shimano's advanced HOLLOWGLIDE construction, precision-machined teeth, and optimized shift ramps, it delivers fast, smooth, and reliable front shifting when paired with the matching 34T-MS inner chainring.
Constructed from aluminium with a carbon fibre reinforced polymer (CFRP) core, the 50T-MS chainring offers exceptional stiffness, low weight, and efficient power transfer. It is designed specifically for Shimano's 110 mm asymmetric 4-arm spider and is compatible with HG and LINKGLIDE 11-speed chains.
Key Benefits
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Genuine Shimano Replacement: Original equipment outer chainring for the Shimano Ultegra FC-R8000 crankset.
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Optimised for 50-34T Compact Setup: Designed to pair with the 34T-MS inner chainring.
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HOLLOWGLIDE Technology: Hollow aluminium/CFRP construction provides an excellent balance of stiffness, strength, and low weight.
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Precise Front Shifting: Shimano's engineered shift ramps and tooth profiles deliver fast and accurate gear changes.
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11-Speed Compatible: Designed for Shimano HG and LINKGLIDE 11-speed chains.
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Direct Fit: Fits Shimano's 110 mm asymmetric 4-arm HOLLOWTECH II crank spider.
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Long Service Life: Premium Shimano construction ensures reliable performance and durability.
Specifications
| Specification |
Details |
| Product |
Shimano FC-R8000 Outer Chainring |
| Chainring Size |
50T |
| Chainring Code |
50T-MS |
| Shimano Part Number |
Y1W898020 |
| Series |
Shimano Ultegra R8000 |
| Compatibility |
FC-R8000 50-34T Compact Crankset |
| Speed Compatibility |
11-Speed |
| BCD |
110 mm Asymmetric 4-Bolt |
| Material |
Aluminium + Carbon Fibre Reinforced Polymer (CFRP) |
| Finish |
Anodised |
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Compatible Components
The Shimano FC-R8000 50T-MS Chainring is compatible with:
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Shimano FC-R8000 50-34T compact crankset
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Shimano 34T-MS inner chainring
- Shimano HG 11-speed chains
- Shimano LINKGLIDE 11-speed chains
- Shimano Ultegra R8000 11-speed road drivetrain components
It is designed exclusively for the 50-34T compact gearing configuration.
Who Is This Best Suited For?
The Shimano FC-R8000 50T-MS 50-34T Chainring is ideal for:
- Road cyclists
- Endurance riders
- Club cyclists
- Competitive racers
- Gran Fondo riders
- Cyclists replacing a worn outer chainring
- Riders maintaining a Shimano Ultegra R8000 groupset
- Anyone wanting to restore original Shimano front shifting performance
Compatibility Note: The 50T-MS chainring is designed exclusively for the Shimano Ultegra FC-R8000 50-34T compact crankset and should be paired with the matching 34T-MS inner chainring for optimal front shifting. It is not interchangeable with the 52T-MT (52-36T), 53T-MW (53-39T), or 46T-MT (46-36T) chainrings, as each gearing combination uses dedicated tooth profiles and shift ramps.Ā
