Upgrade your drivetrain performance with the Shimano Dura-Ace FC-R9200 12-Speed Inner Chainring (40T-NJ), a genuine Shimano replacement chainring engineered for precision, power, and pro-level performance. Designed to pair perfectly with the 54/40T Dura-Ace cranksets (FC-R9200 & FC-R9200-P), this chainring ensures smooth, lightning-fast shifting and maximum drivetrain efficiency for competitive road cycling, triathlon, and time trial riders.
High-Performance 12-Speed Chainring Engineering
The Dura-Ace FC-R9200 chainrings represent Shimano’s cutting-edge technology in drivetrain efficiency and durability. The 40T-NJ inner chainring delivers the perfect balance of low weight, stiffness, and shifting accuracy, allowing you to push harder with smoother gear transitions—even under heavy pedalling loads.
Genuine Shimano Replacement Part
Engineered to OEM specifications for perfect compatibility with Shimano Dura-Ace FC-R9200 and FC-R9200-P cranksets, ensuring factory-quality fit and performance.
12-Speed Optimisation
Specifically designed to work seamlessly with Shimano HG 12-speed chains, improving chain engagement, shifting precision, and power transfer across your entire drivetrain.
Lightweight & Rigid Construction
Shimano’s HOLLOWGLIDE™ technology provides a hollow, reinforced design that reduces weight while maintaining exceptional stiffness for ultra-responsive shifting performance.
110mm Bolt Circle Diameter (BCD)
Fits 4-arm cranksets using Shimano’s 110mm BCD pattern, ensuring wide compatibility across the latest Dura-Ace series.
Professional-Level Performance
Trusted by elite riders worldwide, the Dura-Ace range is Shimano’s flagship road cycling group, offering unmatched precision, reliability, and performance under race conditions.
Compatible Chainring Pairings
- Outer Chainrings: 54T-NJ (Y0MZ98030), 52T-NH (Y0MZ98020), 50T-NK (Y0MZ98010), 46T-NH (Y0MZ98110)
- Inner Chainrings: 40T-NJ (Y0MZ40000), 36T-NH (Y0MZ36000), 34T (Y0MZ34000)
- Genuine Shimano Dura-Ace quality for flawless performance
- Engineered for elite-level efficiency and power transfer
- Compatible with modern 12-speed drivetrains
- Perfect for competitive road cyclists, triathletes, and time trialists
- Ensures smooth, accurate, and consistent shifting even under load
Optimise your drivetrain performance with the Shimano Dura-Ace FC-R9200 12-Speed 40T-NJ Inner Chainring, precision-engineered for maximum speed, power, and reliability on every ride.