Yokomo YOKR12-37SS X Shock Soft Spring - Shock Spring for RC Suspension  [YOKR12-37SS]

Shock spring for 1/10 RC

The Yokomo YOKR12-37SS X Shock Soft Spring is an RC-scale shock spring intended for use in standard shock assemblies on 1/10 scale electric touring and on-road models. It provides a softer baseline compared with medium or hard springs, serving as a tuning option when you want increased compliance and improved traction on low-grip surfaces.

As a general-purpose soft spring, its role is to alter ride height, weight transfer and transient response without changing other shock hardware. Installers typically swap these springs into existing shock bodies, pairing them with the same shock oil and pistons to evaluate the net effect on handling. Because spring rate and preload interact, expect to adjust spring spacing or preload collars to regain ride height after fitting these springs.

Fitment is intentionally generic: the spring is designed to be compatible with common RC shock assemblies that accept standard-length coil springs. Measure internal shock travel and retainers to confirm fit before racing or long test sessions. Use these springs as part of iterative setup changes, noting changes to steering bite, mid-corner grip, and rear traction.