The Yokomo BB-105F-2 flanged bearings offer a tight, reliable fit for YZ-870C applications, designed to minimise unwanted movement in axle and pulley mounts. With dimensions of 5.0x10.0x4.0mm, they suit compact bearing pockets and help ensure consistent rotation.
These flanged bearings are built to deliver steady rotation and resist premature wear across a variety of running conditions. The flange provides extra lateral support that helps keep components tracking true when pushing speed or cornering hard.
Whether you are refreshing worn parts or upgrading for smoother operation, the BB-105F-2 bearings are an easy maintenance choice. Swapping them into a YZ-870C reduces friction losses and can improve throttle response and drivetrain efficiency.
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