Kyosho UB034 Ball Diff Screw and Spring Upgrade  [KY-UB034]

Kyosho UB034 - Ball Diff. Screw & Tensionner Spring Set
Price:
NZD$21.30
Brand:
Kyosho
Model:
KY-UB034
GTIN:
4548565494675
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Precision Tuning Using Kyosho UB034 Ball Diff Screw & Spring Set

The Kyosho UB034 Ball Diff Screw & Tensioner Spring Set provides the small adjustments that make a big difference in differential behaviour. Ideal for hobbyists who tweak setups, this set helps ensure smoother differential rotation and more repeatable handling through corners.

How the Parts Work Together

The screw and spring control preload on the ball diff, which affects how torque is shared between wheels. Properly matched tension promotes even engagement and reduced chatter, giving a more predictable drive feel on varied track surfaces.

Compatibility Notes for Multiple Models

Designed with common Kyosho diff layouts in mind, the UB034 components are often compatible beyond the Ultima RB7.5. This flexibility makes the set useful for owners who maintain several Kyosho vehicles or swap parts during routine servicing.
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 these parts fit the Ultima RB7.5 straight away?

Yes, the UB034 set is commonly used on the Ultima RB7.5, but always confirm the screw length and spring seat match your diff housing before final installation.

Can I tune differential behaviour trackside?

You can make small tension changes trackside with simple tools to adapt to grip levels, but carry spare springs and a correct driver to avoid stripped screws.

What signs show the spring needs replacing?

If the diff feels loose despite adjustment or handling becomes inconsistent, the spring may have fatigued and should be swapped for a fresh one.

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