This front lower A-arm spring suits Yokomo R12/GT models and is supplied in a medium stiffness to provide a compromise between compliance and steering precision. It is an RC-scale replacement component aimed at tuning front suspension response rather than any full-size usage.
Role in setup: the medium-rate spring modifies roll resistance and the initial compliance of the front lower A-arm, helping to tune turn-in and mid-corner grip when coordinated with rear spring and damper choices. Introduce changes incrementally to determine the effect on overall balance.
Pick the medium-rate spring for a neutral handling baseline; always confirm your exact R12/GT variant for compatibility before fitting to the chassis.
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