The Serpent 909519 Centax II Shim Set gives RC racers the micro adjustments needed to refine clutch engagement. The pack contains two 0.3mm shims and one 0.5mm shim, made to fit the Centax II clutch system for straightforward, repeatable changes to engagement height.
Built with racing use in mind, these shims let you dial in throttle response and launch behaviour without complex mods. Small thickness changes can tune how power comes on, helping drivers match clutch feel to track conditions and tyre grip.
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