Yokomo YOKYS1380 HSS Long Shock Spring Green  [YOKYS1380]

Tuning spring with a long HSS profile

The Yokomo YOKYS1380 HSS long shock spring in green serves as an aftermarket replacement for general shock absorber assemblies on RC cars. It is offered as a single spring intended to alter the suspension's static stance and overall feel when installed into compatible shocks.

Because of the extended length, the spring affects preload and the interplay between compression and rebound, making it a practical choice when you want increased travel or a higher ride height without immediately changing internal damper parts. It is most effective when used alongside measured damper adjustments.

To fit, remove the shock cap and spring retainer, slide the spring over the shaft onto the shock body, then set preload and refit the cap. Once installed, check full travel for any binding and verify there is sufficient clearance to nearby chassis items.

Approach tuning methodically: use small preload steps and conservative oil or piston changes to isolate the spring's impact on handling. This incremental method helps maintain a predictable balance between grip and control.