The Kyosho UM578B Front Knuckle & Hub Carrier Set is designed to refine steering response on the Ultima SB chassis. These components are important for keeping accurate steering under load and for reducing unnecessary play in the front suspension, making handling more consistent across rough terrain.
Crafted for strength and exact fitment, the knuckles and carriers minimise flex that can upset steering geometry. Better dimensional control means less wear on ball joints and tie rods, so your car stays predictable over consecutive runs. The UM578B is a useful upgrade for drivers who want steady steering without complex setup changes.
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