Yokomo R12-18RSSH Copper Super Hard Rear Spring for R12/GT series  [R12-18RSSH]

Yokomo R12-18RSSH Rear Shock Spring Copper (Super Hard) for R12/GT series
Price:
NZD$3.26
Brand:
Yokomo
Model:
R12-18RSSH
GTIN:
3888
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Rear Spring for Pitching Dampers

The Yokomo R12-18RSSH is a super hard copper rear shock spring made for the pitching damper on R12 and GT series 1/10 scale RC vehicles. It is offered as a tuning component to sharpen damper feel and boost suspension top-end stiffness without changing damper internals.

Fitment and function: use this spring where a higher rear spring rate is needed to curb pitch and maintain stability when accelerating or braking aggressively. It is a direct fit for chassis that use the R12/GT shock layout and mounting points.

Installation notes: mount as you would a regular coil spring, set the correct preload and check axle travel clearance. After upgrading to a super hard spring, revisit damping and rebound settings to prevent an underdamped car and keep traction predictable.

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.

What tuning effect should I expect?

Expect a firmer rear-end with reduced pitch; the car will resist weight transfer more, which can help stability on tight transitions.

Does spring material matter?

Copper springs offer consistent rate and durability; this super hard copper spring maintains rate under load but requires careful damping setup to remain compliant on rough surfaces.

Any special installation tips?

Ensure the spring seats correctly and that the shock shaft has full travel. Recheck ride height and adjust damper settings after fitting.

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