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

Yokomo R12-21SM Rear Side Roll Spring Silver (Medium) for YRX12/GT/YR-10
Price:
AUD$4.95
Brand:
Yokomo
Model:
R12-21SM
GTIN:
3888
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Fine-Tune YRX12 and GT Chassis with R12-21SM

The Yokomo R12-21SM medium rear side roll spring in silver is a handy upgrade for racers wanting crisper steering response and steadier mid-corner behaviour. Made for YRX12 and GT series, it balances agility with control for consistent handling.

Medium Rate for Controlled Agility

This medium tension spring moderates rear roll while maintaining traction, useful across a range of track types. It fits many Yokomo chassis including YR-10F, GT5-R2, GT5-RS2 and YR-R12C3 so you can tune according to track layout and grip level.
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 electronic setup pairs well with this spring?

A smooth throttle control map and moderate slipper clutch setting help exploit the R12-21SM's balance. Avoid overly aggressive power delivery that can overwhelm rear traction.

How should I test the spring at the track?

Fit the spring and run a few clean laps, noting changes to turn-in and mid-corner roll. Adjust sway bars and damping in small steps to complement the spring rate.

Can I pair this with different front springs?

Yes, pairing the R12-21SM with softer or stiffer front springs will alter balance. Use gradual changes to find the front-to-rear harmony that suits your driving style.

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