Shimano Ultegra GRX CS-R8000 11-Speed HG-EV Road Cassette Sprocket Variant:11-30T An ANT+ FE-C connection allows

An ANT+ FE-C connection allows the KICKR CORE to be controlled from any FE-C enabled device or application

You won’t find this anywhere else but RockShox

Seamless braking raises rider concentration and enjoyment

Decreased rear derailleur and chain tension in low gear

the conic adapter allows to pass from flat to conic in a breeze

Shimano Ultegra GRX CS-R8000 11-Speed HG-EV Road Cassette Sprocket Variant:11-30T An ANT+ FE-C connection allowsSHIMANO ULTEGRA Cassette Sprocket 11 speed CS R8000 System engineered for use with the SHIMANO ULTEGRA R8000 groupset, the R8000 cassette is available in a wide range of road and mixed surface ratios. It is compatible with HG EV and HG X11 chains. FEATURES High performance gear combinations provide superior rider choice PRODUCT SPECIFICATIONS MODEL NO CS R8000 SERIES GRX DI2 Average weight 232 (11 25T) 251 (11 28T) 269 (11 30T) 243 (12 25T) 300 (14