This is a replacement spring specified for the YRX12 2019 kingpin and coil spring front suspension used on 1/10 scale RC cars. The component uses a 0.50mm wire diameter and the pack includes 2 pcs. It is designed as an accessory for fine control of front-end steering preload and initial feel with a kingpin-style suspension.
During setup the spring adjusts the initial preload on the kingpin assembly and can produce subtle differences in steering response useful for tuning. When installing, verify the layout matches the YRX12 2019 kingpin and coil spring arrangement and place the spring in the same orientation as the part being replaced to keep intended preload characteristics consistent.
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