Aftermarket HSS Long Shock Spring for Yokomo YOKYS1380 (Green)  [YOKYS1380]

HSS extended shock spring for added travel

The Yokomo YOKYS1380 HSS long shock spring supplied in green is a replacement coil suited to general shock absorber assemblies on RC models. It is provided as a single aftermarket spring to modify suspension stiffness and stance when fitted into compatible shock bodies.

Its longer form allows you to alter preload and change how the car balances compression versus rebound without immediately swapping piston sizes or damper oil. Use it when extra travel or a higher ride height is required compared with shorter springs.

Installation is standard: remove the top cap and spring retainer, place the spring over the shock shaft on the shock body, then set preload and reassemble. After refitting, cycle the suspension to detect any binding and confirm clearance to adjacent chassis components.

Tuning should be incremental: make small changes to preload and conservative damper adjustments so you can observe handling differences without sudden shifts. Combine this spring with other careful setup tweaks to achieve a balanced result.