Kyosho UB034 Ball Differential Screw and Tensioner Spring Kit  [KY-UB034]

Kyosho UB034 - Ball Diff. Screw & Tensionner Spring Set
Price:
CAD$17.50
Brand:
Kyosho
Model:
KY-UB034
GTIN:
4548565494675
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Service and Tuning with Kyosho UB034 Ball Diff Screw & Spring Set

The Kyosho UB034 Ball Diff Screw & Tensioner Spring Set is a small but important service kit that helps keep your RC car's ball differential adjusted for steady response. Crafted for racers and club drivers who value predictable handling, this set lets you fine tune differential preload for smoother rotation and balanced traction.

Design and Fitment Notes

These screws and springs pair to deliver adjustable tension across the ball differential, enabling smoother transfer of drive between wheels. The components are designed to work with Kyosho differentials where the same screw and spring geometry is used, helping maintain consistent action under load.

Use Across Kyosho Vehicles

Although commonly used on models such as the Ultima RB7.5, the Kyosho UB034 set can be fitted to other Kyosho cars that accept the same differential hardware. Keeping the diff tensioned correctly improves cornering balance and reduces unpredictable handling on both carpet and hardpack surfaces.
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.

What tools do I need to fit the Kyosho UB034 parts?

A small hex driver and a flat pick are usually enough to remove the old screw and install the UB034 spring and screw. Use the correct sized driver to avoid rounding the screw head.

How should I set initial differential tension?

Start with light preload and test on a familiar surface. Increase tension in small increments until you find a balance between cornering grip and straight-line stability.

How often should I inspect these parts?

Check the screw and spring whenever you service the differential or if you notice slop or inconsistent feel. Replace them if the spring loses tension or the screw shows wear.

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