![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
![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/H89dc0b81d2d34a1e97ae959bab506cc7N.jpg_640x640q90.jpg)