Yokomo YOKYS1380 - HSS Long Shock Spring (Green)  [YOKYS1380]

HSS long shock spring for RC suspension tuning

The Yokomo YOKYS1380 HSS long shock spring in green is an RC-scale replacement spring designed for general shock absorber assemblies. It is supplied as a single aftermarket spring intended to alter suspension feel and ride height when swapped into compatible shock bodies.

Use this spring to adjust preload and to influence the balance between compression and rebound behavior without changing the damper oil or pistons. Because it is a longer spring profile, it suits setups where additional travel or a higher static ride height is required relative to a shorter spring of similar rate.

Installation is standard for coil-type shock springs: remove the shock top cap and spring retainer, fit the spring over the shock shaft onto the shock body, then set preload and reassemble. Confirm there is no binding across the suspension travel and check clearance to other chassis components after swapping springs.

When tuning, combine this spring with conservative changes to damper settings and small incremental adjustments to preload so you can evaluate handling effects without introducing sudden handling changes. Use it as part of an iterative setup process focused on balance and predictability.