The Tamiya 15181 9mm Diameter Guide Roller Ball Bearings are aimed at Mini 4WD enthusiasts who prefer a low-profile roller for tighter line control. As the smallest diameter in the Tamiya series, these rollers offer fine tuning options and pair well with 13mm bearings to broaden setup choices for different race conditions.
Designed for precision and durability, these ball bearings cut friction and help the car track cleaner through complex sections. The reduced height supports a lower centre of gravity which is especially helpful on twisty layouts where precise steering response is required.
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