This Serpent 500911 front coil spring is specified at 13mm diameter with a 4.1lbs rate and a yellow finish, intended to help dial in front-shock response on scale RC cars.
As a primary spring component it changes ride frequency and initial compliance within the front suspension. Use the spring to alter roll resistance, turn-in behaviour, or ride height by adjusting spring preload on compatible shock bodies.
Setup pointers:
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