This is a front lower A-arm spring designed for Yokomo R12/GT series RC cars, offered in a medium rate to provide balanced front-end response during cornering and weight transfer. It is an RC-scale replacement part intended for tuning front suspension behavior rather than a component for full-size vehicles.
Role in setup: the medium spring alters roll resistance and initial compliance at the front lower A-arm, helping to balance turn-in and mid-corner grip when used alongside matching rear springs and damper settings. Use it as part of incremental tuning when you need a compromise between softness for mechanical grip and stiffness for responsiveness.
Choose the medium-rate spring when aiming for a neutral balance between front grip and steering precision; verify compatibility with your specific R12/GT chassis variant before fitting.
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