Kyosho IF423HB Hard Rear Lower Arm for MP9 TKI4 - Precision Fit  [KY-IF423HB]

Kyosho IF423HB - Hard Rear Lower Suspension Arm (LR/MP9 TKI4)
Price:
NZD$18.24
Brand:
Kyosho
Model:
KY-IF423HB
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Fit and function improvements for MP9 TKI4 using Kyosho IF423HB

The Kyosho IF423HB Hard Rear Lower Suspension Arm is a purpose-made upgrade for the MP9 TKI4 series. It is designed to resist repeated stress from aggressive driving while helping to preserve consistent chassis geometry.

Materials tuned for track reliability

Produced in a stiffer compound, the Kyosho IF423HB reduces deformation under load, giving racers a more repeatable setup. The arm balances toughness with enough give to avoid harsh loss of traction.

Straight swap installation

This part is engineered as a direct swap for the MP9 TKI4 lower rear position, meaning no alterations to the chassis are required. The accurate fit lets you change parts quickly and get back on track to test setup changes.
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 use stock hardware when fitting the IF423HB?

Standard factory screws and pins typically work, but inspect them for wear and replace if they show signs of damage to maintain secure suspension movement.

Will this change my suspension tuning?

Because the arm is harder, you may notice reduced compliance in the rear. Small adjustments to shock damping or roll center can restore balance without major setup changes.

Is any break in needed for the new arm?

No special break in is required, but check mounting points and hinge action after the first few runs to ensure everything seats correctly.

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