Shimano 105 FC-R7100 Chainring - 34T-NK
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eBayShimano 105 FC-R7100 34T Chainring 2x12 Speed for 50-34T - NK - Y0RS9801T
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Shimano 105 34T Chainring FC R7100 Outer Chain Ring 12 Speed Road Bike Y0RS9801TFree delivery in 1–3 days£14.99Visit shop →
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Shimano 105 Chainring 34T Inner Double for 12 Speed Road Bike FC-R7100Free delivery in 1–3 days£18.42Visit shop →
Shimano 105 50T Chainring FC R7100 Outer Chain Ring 12 Speed Road Bike Y0RS98010Free delivery in 1–3 days£44.99Visit shop →
Shimano 50T Chainring 105 FC-R7100 2x12 Speed for 50-34T - NK - Y0RS98010Free delivery in 1–3 days£54.95Visit shop →
Shimano Black Fc-R7100 12-Speed ChainringFree delivery in 1–3 days£15.99Visit shop →
Shimano Black Fc-R7100 12-Speed ChainringFree delivery in 1–3 days£74.99Visit shop →
TredzShimano Black Fc-R7100 105 12-Speed Inner Chainring, 36T-Nh For 52/36T Size 36
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eBayShimano 105 FC-R7100 12-Speed 50T-NK 50/34T Road Outer Bike Chainring Black A
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Product Information
Full details
The Shimano 105 FC-R7100 34T chainring is an essential replacement component for road cyclists using the 12-speed 105 drivetrain who want to restore factory-level shifting precision. Designed specifically for the FC-R7100 crankset, it delivers reliable power transfer and efficient gear changes, though it is exclusively optimized for 12-speed Hyperglide+ chains and will not provide ideal performance with older drivetrain systems.
All features
| Model Part Number | FC-R7100 34T-NK |
|---|---|
| Brand | Shimano |
Extended Product Information
FAQs
Can I use this on an 11-speed drivetrain?
No, this chainring is specifically optimized for Shimano 12-speed systems and Hyperglide+ chains.
Does this include the chainring bolts?
No, this is a replacement chainring only; you should reuse your existing mounting hardware or purchase new bolts separately if yours are damaged.
Is this compatible with the Shimano 105 R7000 crankset?
No, the R7100 series components are designed for the 12-speed platform and are not compatible with the 11-speed R7000 series.
What tools do I need to swap the ring?
You typically need a crank removal tool for the specific bottom bracket type and a torque wrench with the appropriate hex or Torx bit for the chainring bolts.
Do I need to replace the outer ring at the same time?
While not strictly required, it is best practice to replace both rings simultaneously if the drivetrain is heavily worn to ensure optimal shifting and even wear patterns.
Troubleshooting
Chain skips or makes noise after installation
Check that the chain is correctly seated on the teeth and ensure the front derailleur limits are properly adjusted.
Shifting feels sluggish under load
Verify that your chain is a 12-speed Hyperglide+ chain; using an incompatible chain will degrade shifting performance.
Chainring bolts feel loose
Ensure bolts are tightened to the recommended torque specification using a calibrated torque wrench.
Pros and Cons
Pros
- Restores original factory shifting performance
- Optimized for Hyperglide+ chain technology
- High-quality construction for long-term durability
- Precise fit for FC-R7100 cranksets
Cons
- Requires professional tools for installation
- Compatibility limited strictly to 12-speed systems
- Not backward compatible with 11-speed components
Setup, Compatibility & Care
Installation of the FC-R7100 chainring requires removing the crankset from the bottom bracket and utilizing the correct hex or Torx tools for the chainring bolts. It is highly recommended to use a torque wrench to tighten the bolts to manufacturer specifications to prevent damage to the crank spider or the ring itself.
Compatibility: This 34T ring is exclusively for the FC-R7100 12-speed crankset. Do not attempt to use this with 11-speed chains, as the width difference will lead to poor shifting, increased noise, and premature wear.
Care: Clean your chainring regularly using a mild degreaser and a stiff brush to prevent grit buildup. Regularly inspect the teeth for signs of hooking or excessive wear, especially if you ride in muddy or dusty conditions, to ensure your drivetrain lasts as long as possible.