![Shimano GRX 810 crank. What is this bearing sleeve called? It creates a snugger fit with the BB. Honestly don't know what BB is in the frame as it's not my bike. Shimano GRX 810 crank. What is this bearing sleeve called? It creates a snugger fit with the BB. Honestly don't know what BB is in the frame as it's not my bike.](https://i.redd.it/hucrtfvno3x81.jpg)
Shimano GRX 810 crank. What is this bearing sleeve called? It creates a snugger fit with the BB. Honestly don't know what BB is in the frame as it's not my bike.
![Shimano GRX FC RX600 Crankset 11 Speed 165/170/172.5/175mm 40T Bicycle Road Crank 1*11 speed - AliExpress Shimano GRX FC RX600 Crankset 11 Speed 165/170/172.5/175mm 40T Bicycle Road Crank 1*11 speed - AliExpress](https://ae01.alicdn.com/kf/H010aa7c2847b4362a6937139912c5f8b3.jpg_640x640q90.jpg)
Shimano GRX FC RX600 Crankset 11 Speed 165/170/172.5/175mm 40T Bicycle Road Crank 1*11 speed - AliExpress
![New Shimano GRX switches to 12-speed and increases gear range – but sticks to mechanical shifting | BikeRadar New Shimano GRX switches to 12-speed and increases gear range – but sticks to mechanical shifting | BikeRadar](https://c02.purpledshub.com/uploads/sites/39/2023/08/Shimano-GRX-RX8201-b490682.jpg)
New Shimano GRX switches to 12-speed and increases gear range – but sticks to mechanical shifting | BikeRadar
![Shimano GRX FC-RX810 Crankset 175 mm 42 Teeth HR 11f. Hollowtech 2 or Bottom Bracket : Amazon.de: Sports & Outdoors Shimano GRX FC-RX810 Crankset 175 mm 42 Teeth HR 11f. Hollowtech 2 or Bottom Bracket : Amazon.de: Sports & Outdoors](https://m.media-amazon.com/images/I/519blHHve6L._AC_UF894,1000_QL80_.jpg)