13mm Front Shock Spring 3.4lbs Red - Serpent 500906  [SER500906]

13mm Front Shock Spring Overview

The Serpent 500906 is a 13mm front shock spring with a 3.4lbs rate in a red finish, supplied as a replacement or tuning spring for front shock assemblies that accept 13mm coils. It provides a consistent spring rate for setup work and can be used to stiffen the front end when required.

Fitting follows standard shock servicing: disassemble the shock, remove the worn spring, slide the 13mm spring onto the shock shaft, set the correct spring seat and preload, then reassemble. Confirm the spring seats flush on the retainer and check that the shock compresses freely through its travel after reassembly.

As a tuning item, the 3.4lbs rate increases front stiffness and response; consider it when you need firmer front support or to shift handling balance. Test changes methodically by keeping damper oil and preload consistent while evaluating results.

Made for RC use, this spring is intended for careful setup and maintenance of front suspension on compatible 13mm shock assemblies.