Kyosho UM509B RB5 52T Differential Gear Set  [KY-UM509B]

Kyosho UM509B - Diff. Gear Set(52T/RB5)
Price:
AUD$15.41
Brand:
Kyosho
Model:
KY-UM509B
GTIN:
4548565470624
Condition:
Brand New
Quantity Discount
Unit Price You Save
2 $13.15 each $4.51 or 15%
3+ $12.50 each $8.71 or 19%
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Kyosho UM509B 52T diff gear for RB5 service and repair

The Kyosho UM509B Diff Gear Set offers a 52-tooth configuration and fits RB5 models as a dependable replacement. It is well suited to bashing and competitive club events where predictable diff behaviour matters.

Where it fits and how it behaves

Specifically produced for the RB5 platform, this diff set installs with correct alignment and smooth engagement. The 52T gearing delivers a balanced compromise between traction and corner exit speed for varied surfaces.

Installation pointers and routine checks

Fit the Kyosho UM509B Diff Gear Set with attention to gear mesh and bearing preload. After initial runs recheck fasteners and lubricant levels to maintain long-term gear health.
Remark :
Due to limited stock availability, please notice that some Kyosho 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 52T set change my handling much?

The 52T ring gives a neutral handling shift for most RB5 setups; it is not a radical change but can affect mid-corner traction and acceleration feel.

Do I need special tools to fit the UM509B?

Standard hobby tools for gear removal and bearing work are sufficient; use a torque driver for critical fasteners and a shim for precise mesh if needed.

How often should I inspect the diff after hard runs?

Check gear teeth and lubricant after each intense session and replace components showing wear to avoid damage to the new gear set.

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