This Serpent 500907 spring is an RC-scale 13mm coil spring with a 3.6lbs rate and pink finish, designed for general R/C suspension systems. It can be used as a direct replacement where 13mm springs are specified.
Installation notes: fit the spring over the shock shaft and seat it on the correct retainer for your shock model, ensure full, unobstructed shaft travel and correct alignment before completing assembly, and adjust preload in small increments to tune ride height.
Tuning role: the firmer 3.6lbs rate alters roll and pitch control, offering crisper responses on jumps and corners; combine with damping adjustments and test runs to dial in handling preferences.
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