This Kyosho IF421-01 front hub carrier bush set is an RC-scale replacement part designed for use with the MP9 chassis. The component replaces worn bushings in the front hub carrier assembly and is intended to restore the intended clearance and movement between the hub carrier and steering components without changing chassis geometry.
Compatibility: this item is intended for MP9 series hub carriers. It serves as a direct replacement for the bushings that locate the hub carrier on the front suspension carriers, and is typically used during regular maintenance or when diagnosing play in the front end.
Installation notes: removal of the front hub carrier from the suspension arm is usually required to access the bushings, and basic tools such as hex drivers and pliers are commonly used. Take care to retain any original shims or washers and check alignment after reassembly; confirm free rotation of the hub and consistent steering movement before track use.
Tuning role: replacing worn bushings affects play and steering feedback rather than changing suspension geometry, so this part is useful for maintaining consistent handling and repeatable setup rather than as a tuning upgrade to alter handling characteristics.
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