Chainrings

- Shimano, Tiagra FC-4700, Chainring, Teeth: 50, Speed: 10, BCD: 110, Bolts: 4, Outer, Aluminum, Grey, Y1RC98050

- Better chain engagement for greater chain retention - Special gear teeth profile designed for MTB riding usage - Smoother driving even over bumpy terrain - For XTR FC-M9100-1, M9120-1 cranks

- Shimano, GRX FC-RX810 2x11, Chainring, Teeth: 31, Speed: 11, BCD: 80, Bolts: 4, Inner, Aluminum, Black - Shimano, GRX FC-RX810 2x11, Chainring, Teeth: 48, Speed: 11, BCD: 110, Bolts: 4, Outer, Aluminum, Black

Shimano's Ultegra 6800 chainrings provide confidence-inspiring shifting and category-defining speed. Cold-forged aluminum comprises these super-stiff, hollow outer rings, and Shimano's unique system of ramps and pins means lightning fast shifts are at your command. - Bolt circle diameter: 4-bolt 110mm asymmetric - 50T pairs with 34T inner ring - 52T pairs with 36T inner ring - 53T pairs with 39T inner ring Inner rings sold separately

Shimano Dura-Ace 9000 11-Speed Chainrings. - Chainring BCD: 110 Shimano Asymmetric - Color: Silver/Black - Defined Color: Silver - Drivetrain Speeds: 11 - Material: Aluminum - Ring Position/Type: Outer

The Shimano R9100 series crankset achieves the ultimate in optimal power transfer. It does this through a more reinforced outer chainring on its unique asymmetrical four-arm spider construction. - Chainring BCD: 110 Shimano Asymmetric - Drivetrain Speeds: 11 - Material: Aluminum - Ring Position/Type: Outer