Kyosho UB038 RB7.5 Slipper Spring Replacement  [KY-UB038]

Kyosho UB038 - Slipper Spring Set (RB7.5)
Price:
£8.60
Brand:
Kyosho
Model:
KY-UB038
GTIN:
4548565494712
Condition:
Brand New
Quantity Discount
Unit Price You Save
2 £7.28 each £2.63 or 15%
3+ £6.92 each £5.02 or 19%
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Refined Clutch Tuning for the RB7.5 with Kyosho UB038

The Kyosho UB038 slipper spring set has been made for the Ultima RB7.5 chassis to give drivers improved control over slipper action. These springs support repeatable engagement and are built with racing durability in mind.

Main Advantages of the Kyosho UB038 Slipper Springs

  • Compatibility: Specifically matched to the Ultima RB7.5 for correct fit and reliable function.
  • Performance: Helps produce more consistent clutch engagement to aid lap-to-lap stability.
  • Durability: Constructed to resist frequent race stresses and extend service intervals.
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.

Can I replace stock RB7.5 springs with UB038 myself

Yes, hobbyists with basic tools can swap the springs; follow slipper torque recommendations and perform shakedown runs to set final tension.

Do UB038 springs require break in

A short bedding period under light runs helps the springs settle into the slipper assembly, after which you can fine tune tension for your driving style.

Will changing to UB038 affect gearing choices

Spring changes alter clutch slip characteristics but do not change gear ratios; you may still want to test gearing under load to ensure optimal acceleration and top speed balance.

How often should I inspect these springs

Check spring condition after intense race meetings and inspect for deformation or loss of tension; replace if performance becomes inconsistent.

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