13mm Front Shock Coil Spring Serpent 500905 - Orange 3.3lbs  [SER500905]

The Serpent 500905 is supplied as a 13mm front coil spring finished in orange and rated at 3.3lbs. It is intended to change front stiffness during suspension setup, offering a mechanical option to improve handling for competitive or hobby use.

This spring suits front shock assemblies that accept a 13mm coil profile; always check that the spring will seat on the perch and clear the shock cap and shaft for your specific shocks. Note that this is an upgrade or replacement spring only, not an entire shock absorber.

Fitting is basic: remove the shock from the chassis, open the shock cap or retainer, swap in the new spring, and reassemble while adjusting preload and free length to taste. After fitting, confirm the shaft moves freely and that the spring remains seated during full compression and rebound cycles.

Setup tip: the 3.3lbs rate gives firmer front response relative to softer springs, which impacts braking dive and corner entry. Combine with appropriate damping and ride-height settings to keep handling predictable and balanced.