The Serpent SER411449 Damper Extension 30mm is a straightforward accessory that alters suspension geometry to refine handling on your RC car. Made for the S120 PRO, it gives racers an accessible way to tweak steering balance and mid-corner behaviour.
This 30mm extension is designed to replace the 10mm extension used in cars such as the F110 SF4 (SER411394). Extending the damper length increases on-power steering response, which can help with rotation and corner entry, but it can also reduce rear stability during heavy braking.
If you need a more planted rear end, removing the extension returns a more neutral behaviour under acceleration and braking. The part is useful for drivers who regularly adjust their setup to match grip levels or driving style.
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