Shimano Ultegra R8000 11 Speed ChainringThis top-quality 11 speed road chainring offers better power transfer and quicker, more precise shifting.Lightweight Road ChainringThis superb model is specifically designed for use with your Shimano Ultegra FC-R8000 crankset for efficient, smooth shifting. Additionally, it features Hollowglide technology which offers reduced weight and drastically improved stiffness and aerodynamics. Finally, this is an ideal replacement for your old or worn-out existing model for optimum power transfer and improved shifting performance.Features: Material: Aluminium BCD: 110mm Speed: 11 speed Compatibility: Shimano Ultegra FC-R8000Technologies: Hollowglide: High rigidity hollow structure cuts down on weight yet maintains strength. Better power transfer and quicker and more precise front shiftingA 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components & Wheels from Chain Reaction Cycles, the World's Largest Online Bike Store.