The Shimano Ultegra R8170 Di2 12-Speed Upgrade Kit delivers cutting-edge performance for road cyclists seeking seamless electronic shifting and precise braking. This comprehensive kit features a 50/34T crankset with 172.5mm crank arms and an 11-30T cassette, providing a versatile gear range suitable for various terrains. The Di2 system ensures quick and reliable gear changes, while the hydraulic disc brakes offer consistent stopping power and control.Designed with Shimano's latest technology, the R8170 series enhances the riding experience through improved ergonomics and system integration. The components are optimized for performance and durability, making this kit an excellent choice for riders aiming to upgrade their current setup to a modern, high-performance drivetrain.Features:- Crankset: 50/34T chainrings with 172.5mm crank arms- Cassette: 11-30T 12-speed for a wide gear range- Di2 electronic shifting system for precise, wireless gear changes- Hydraulic disc brakes for consistent and powerful braking- Optimized for performance, durability, and rider comfort

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