Series: Shimano GRX Di2 11-speed

Composite body

More durable chainwheel teeth

Chainring BCD: 104/64

For Kuat racks with the 1-1/4" receiver tounge

Sram PG-830 8-Speed Cassette 11-28T Silver can be discounted Series: Shimano GRX Di2 11-speedCassette technology optimized for MTB. More reliable. More durable. Better performing, thanks to an optimal tooth profile and shift ramp design for quick and positive index shifting. Go climb a mountain. Sram's cassette performance is optimized by material choice, tooth profile and shift ramp design for quick and positive index shifting PowerGlide II 8 speed performance in an all steel cassette.