Yokomo R12-37SS Soft Spring for R12/GT Series X-Shock  [R12-37SS]

Yokomo R12-37SS Soft spring for X shock for YOKOMO R12/GT series
Price:
£1.50
Brand:
Yokomo
Model:
R12-37SS
GTIN:
3888
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Soft compression spring for R12 and GT models

The Yokomo R12-37SS is a soft-rate replacement spring designed specifically for X-style shocks fitted to R12 and GT series 1/10-scale RC chassis. This tuning spring softens initial compression and alters rebound behavior so you can refine chassis balance while keeping your existing shock pistons and oil settings.

Fitting the R12-37SS follows common shock service steps: remove the cap and retainer, take out the current spring, seat the R12-37SS correctly on the shaft, then reassemble and set preload. Use appropriate shock tools and a tidy workspace to avoid misplacing small components.

On-track benefits from the soft spring usually include:

  • Improved mechanical grip on slick surfaces through added initial compliance.
  • Better absorption of minor bumps and curbing for steadier mid-corner behavior.
  • Compatibility with softer oils or reduced preload to help dial in roll and turn-in traits.

Select this spring when a smoother, more progressive weight transfer is desired and after anti-roll bar and ride-height adjustments are in place.

Compatibility

  • GT5-R2
  • GT5-RS2
  • GT5-R35
  • GT5-SC430
  • GT3-REA
  • GT3-IS350
  • GT3-B4
  • GT3-CAX
  • GT3-BRZ
  • GT3-AHP
  • GT-B
  • YR-R12C3
  • YR-R12C31
  • YRF-001RF
  • YRF-001W
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

Which R12 and GT variants will accept the R12-37SS?

The list in the compatibility section shows commonly compatible models. Always check physical fit for your specific chassis and shock length before committing to a full set.

Can I mix spring rates front and rear with this part?

Yes. Mixing rates is a common tuning approach to balance understeer and oversteer. Try small rate differences and test lap times and handling to find the best combination.

Any orientation notes when installing the R12-37SS?

Ensure the spring seats squarely against the retainer and that the spring ends do not catch on the shaft or cap. Correct seating prevents odd bind and ensures predictable behavior.

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