Shimano Ultegra FH-RS770 Centre Lock 11-Speed Freehub
| Brand | Shimano |
|---|---|
| Colour | Black / Silver |
Ultegra grade rear hub for serious road cyclists. For E-Thru disc brake compatible bicycles, the RS770 freehub blends good looks and high quality performance.
Technology
Cup & Cone Bearing
Shimano cup & cone bearings use angular contact to effectively displace lateral and vertical loads for smooth rotation and excellent durability. Plus, their design makes them easier to adjust and service.
Centre Lock
The Centre Lock system makes an easy rotor installation possible with spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency.
E-Thru
The tool-less type thru-axle skewer system optimizes rigidity and weight balance and enables easy operation with a reliable internal cam mechanism. The 15mm thru-axle system is 15% stiffer torsionally and 25% stiffer in transverse shear than a traditional 9mm quick release front axle system. High rigidity is secured while keeping the optimum weight balance. The E-Thru axle hub system minimizes the distortion of suspension while maintaining lightweight for riding around sharp corners at high speed.
Features
- Designed for use with Centre-Lock Disc rotors for secure hassle free setup
- Super quick engaging Freehub body with pawl engagement every 10 degree giving near instant power transfer
- Excellent sealing performance through the use of low friction Labyrinth and contact seals, and an internal grease sleeve
- Special Boron Nitride machining process is applied to the cones for super smooth rotation
- Cold Forged aluminium hub shell with anodized finish
- For 142 x 12mm dropouts (axle not included)
- Designed for 11-speed road cassettes
