R12/GT Rear Shock Spring Copper (Super Hard) - Yokomo R12-18RSSH  [R12-18RSSH]

Yokomo R12-18RSSH Rear Shock Spring Copper (Super Hard) for R12/GT series
Price:
AUD$2.72
Brand:
Yokomo
Model:
R12-18RSSH
GTIN:
3888
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High Rate Rear Shock Spring

The Yokomo R12-18RSSH rear shock spring is a super hard copper coil specifically for the pitching damper on R12 and GT series 1/10 scale RC models. Supplied as a tuning item, it increases suspension top-end stiffness and changes damper feedback without altering internal shock parts.

Fitment and function: install where a higher rear spring rate is desired to minimise pitch and enhance stability during heavy acceleration or braking. This spring is a direct replacement for vehicles that use the same R12/GT shock dimensions.

Installation notes: fit in the standard rear shock assembly, set preload and confirm full travel clearance. After switching to a super hard spring, adjust damping and rebound to prevent underdamped handling and to preserve traction consistency.

Compatible Models

  • GT5-R35
  • GT5-SC430
  • GT3-REA
  • GT3-IS350
  • GT3-B4
  • GT3-CAX
  • GT3-BRZ
  • GT3-AHP
  • GT-B
  • GT5-R2
  • GT5-RS2
  • YR-R12C3
  • YR-R12C31
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.

Will this stiff spring affect corner grip?

A stiffer rear spring can reduce weight transfer and may alter mid-corner balance. Combine the spring with appropriate damper rates to maintain cornering grip.

Is shock servicing needed when upgrading springs?

Complete shock servicing is not required, but inspect seals and piston condition. If the ride becomes too harsh, consider changing oil viscosity or pistons.

How to verify correct fit?

Check that the spring seats without binding and that travel is not impeded. Confirm the model matches the R12/GT shock geometry listed above.

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