Front 13mm Shock Spring Serpent 500909 3.8lbs Purple  [SER500909]

Front shock spring Serpent 500909 overview

The Serpent 500909 is a 13mm front shock spring rated at 3.8lbs, offered in purple to complement many builds. It is a replacement RC part intended for front dampers that accommodate 13mm springs and standard spring seats.

Compatibility: make sure your front damper accepts a 13mm-length coil and uses a standard inner-diameter seat before installing. This spring modifies front stiffness and should be paired with appropriate shock oil and preload tuning for best results.

Installation overview: unscrew the shock cap and remove the shaft assembly, slide off the existing spring, fit the Serpent 13mm spring onto the seat, adjust collar preload as required, and then reassemble. After refitting confirm free shaft movement and correct damper action.

Tuning role: fitting a 3.8lbs front spring increases spring force compared with softer variants, reducing body roll and front dive and producing a firmer front response. Use small, measured changes and retest, tuning damping and rear rates to maintain overall balance.