The Factory Pro B-SB025F flanged steel ball bearings are sized 1/8 x 5/16 and sold in a pack of four for practical spares or upgrades. Their steel finish and flanged profile provide a steady mount and predictable lifespan for everyday hobby tasks and track sessions.
The built-in flange helps the bearing resist axial movement, holding position inside the housing when shafts see side loads. That secure seating improves drivetrain tracking and reduces trim adjustments during hard runs.
These bearings are made from durable steel to stand up to regular use in both on-road and light off-road models. Their common dimensions make them a flexible replacement option for many kits and custom builds.
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