Front Shock Spring 13mm Blue 3.7lbs for Serpent 500908  [SER500908]

Fit and clearance overview

The Serpent 500908 13mm front shock spring is an aftermarket tuning spring intended to change front suspension support and response on RC cars. Its 3.7lbs rate and blue coating are setup details that influence ride height and initial support rather than structural parts of the chassis.

Use this coil only where shock assemblies accept 13mm-diameter springs. Verify the spring seat diameter, collar compatibility, and available shock travel before installation to prevent binding. Typical installation requires draining oil if needed, disassembling the shock, sliding the spring over the shock body, setting preload with the collar, and reassembling while ensuring the shaft moves freely.

Practical tuning advice: fitting a stiffer front spring increases support and reduces nosedive under braking; a softer spring increases compliance for better traction on rough sections. Always pair spring swaps with damper oil and piston tuning and test progressively to find balance.