Serpent SER500917 13mm Rear Shock Spring Green 2.4lbs  [SER500917]

Rear shock tuning component

The Serpent SER500917 is a purpose-made RC-scale rear shock spring specified in the product code, supplied in green with a 13mm nominal diameter and a 2.4lbs spring rate as labeled. It is intended as a direct-replacement element for rear shock assemblies that accept a 13mm coil, and should be regarded as a tuning component rather than a complete shock unit.

Fitting is straightforward for anyone used to coil-over shocks: remove the shock cap, take off the spring retainer, slide the spring onto the shock shaft, then reassemble while setting consistent preload. After installation verify clearance at full compression and extension, and recheck fasteners following a short run.

As a tuning part the spring modifies rear-end feel by changing static ride height and the rate at which the suspension resists compression. Pair it with appropriate preload, damper settings, and tyre choice; make small incremental changes and test under representative conditions to judge traction and corner exit.