13mm Front Shock Spring Green 4lbs - Serpent 500910  [SER500910]

Compact front coil: 13mm, 4lbs

The Serpent 500910 shock spring is designed for short front shock use in R/C models, offering a 13mm active length and a 4lbs rate finished in green. It is suitable as a direct swap where short springs are required to refine front-end balance and improve small-scale weight transfer.

To fit, remove the shock cap and shaft, slide the spring over the shock shaft onto the retainer, then rebuild the shock while double-checking preload and travel clearance. Verify inner diameter and retainer compatibility to avoid binding issues during operation.

In tuning, selecting a 4lbs spring for the front raises initial resistance and roll stiffness compared with softer options; this often tightens turn-in and supports ride height but should be used alongside damping changes and ride-height tuning for best balance.