Rear Shock Coil Spring YOKBMS12105 for Yokomo  [YOKBMS12105]

Yokomo BMS-12105 - Rear Shock Spring SS12105
Price:
NZD$18.34
Brand:
Yokomo
Model:
YOKBMS12105
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About the Rear Coil Spring

This component is a rear shock coil designed for R/C suspension systems and offered as a spare part for rear shock assemblies. It fits into standard shock cartridges and towers when the spring outer diameter and seat configuration are compatible.

In use, the coil adjusts rebound, compression and rear squat characteristics; changing rate or preload alters ride height, midstroke support and bottoming resistance. Consider it a tuning element within a broader setup rather than a single fix for balance problems.

To install: remove the shock, relieve preload, slide the coil over the shock shaft and reposition retainers to set preload. Inspect mounting points and the shaft for wear before refitting, and confirm full free stroke after assembly to avoid binding issues.

Tuning advice: vary preload to affect initial stiffness and ride height, choose different rates to suit track conditions, and combine spring swaps with oil and piston adjustments to keep behaviour consistent throughout travel.
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 spring dimensions matter for fitment?

Key dimensions are outer diameter, free length and seat profile. Match the outside diameter and ensure the spring height allows the retainers to secure preload without contacting other components.

Will changing spring rate affect damping feel?

Yes. A heavier spring raises midstroke support and can make the car feel firmer; softer springs improve compliance. Always retune damper oil and pistons when you alter spring rate for predictable performance.

How should I store spare springs?

Keep spares in a dry container away from direct sunlight and chemicals. Store springs flat or in original packaging to prevent deformation and to keep pairs together for matched behaviour.

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