Upgrade or replace your worn components with the Shimano 105 FC-R7100 12-Speed Inner Chainring, specifically designed for 50/34T compact cranksets. Engineered for precision shifting, maximum efficiency, and superior power transfer, this genuine Shimano replacement part ensures your drivetrain runs smoothly and reliably.
Featuring Hyperglide+ technology, the 34T-NK inner chainring is optimised for use exclusively with Shimano HG 12-speed chains, delivering improved chain engagement, reduced friction, and faster, smoother gear changes under load. Whether you’re racing, training, or riding for fitness, this chainring provides the performance edge you need.
- Genuine Shimano 105 FC-R7100 12-speed inner chainring – 34T-NK
- Designed for 50/34T compact crankset configurations
- Compatible only with Shimano HG 12-speed chains
- Hyperglide+ tooth profile for smoother, faster, and more efficient shifting
- Enhanced power transfer and reduced drivetrain wear
- Perfect for replacing worn or damaged inner chainrings
- Shimano part number: Y0RS9801T (matches 50T-NK outer chainring Y0RS98010)
Compatibility:
- Outer chainrings: 50T-NK (Y0RS98010) or 52T-NH (Y0RS98070)
- Inner chainrings: 34T-NK (Y0RS9801T) or 36T-NH (Y0RS9802T)
- For use with Shimano 105 FC-R7100 cranksets only
Maintain your drivetrain’s peak performance with the Shimano 105 34T-NK Inner Chainring, the perfect blend of durability, precision, and Shimano engineering.