For drivers refining handling, the Kyosho W5313-20 spring pack is matched to the RB7.5 and features a 1.2mm wire with 9.25x61 dimensions to give reliable response and predictable weight transfer through corners.
These springs are designed to hold rate and resist deformation under racing loads. Use them to replace aged springs or to step your setup towards a more controlled balance without sacrificing responsiveness.
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