Yokomo R12-21SM Medium Side Roll Spring Rear for YRX12/GT  [R12-21SM]

Yokomo R12-21SM Rear Side Roll Spring Silver (Medium) for YRX12/GT/YR-10
Price:
NZD$5.67
Brand:
Yokomo
Model:
R12-21SM
GTIN:
3888
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YRX12/GT Handling Upgrade with Yokomo R12-21SM

The Yokomo R12-21SM medium rear side roll spring in silver is aimed at enthusiasts who want steadier corner exits and cleaner on-power traction. Specifically made for YRX12 and GT platforms, it helps refine lateral balance without dulling feedback.

Medium Spring Rate for Precision Driving

With its medium spring rate, the R12-21SM gives controlled body motion that is well suited to a variety of track surfaces. It works with a broad selection of Yokomo chassis such as YR-10F, GT5-R2, GT5-RS2 and YR-R12C3 so you can tune for grip and stability.
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.

Is the R12-21SM a direct fit on older Yokomo rear hubs?

Many classic and modern Yokomo rear hubs accept this spring, but verify seat diameter and length against your hub to be certain of direct fitment.

Will this spring work on high-grip surfaces?

Yes, the medium rate helps manage traction on higher grip tracks by limiting excessive roll while keeping enough compliance for consistent tyre contact.

Should I change damping when fitting this spring?

You may need to fine-tune damper settings after swapping springs. Slightly firmer damping can complement the medium spring to control rebound and roll recovery.

How do I compare this to soft or hard springs?

Compared to soft springs the R12-21SM reduces body roll, and versus hard springs it preserves traction and predictability. Use it when you want a middle ground for consistent lap times.

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