Kyosho IF423HB Rear Lower Suspension Arm for MP9 TKI4 - Tough Upgrade  [KY-IF423HB]

Kyosho IF423HB - Hard Rear Lower Suspension Arm (LR/MP9 TKI4)
Price:
AUD$16.07
Brand:
Kyosho
Model:
KY-IF423HB
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Reinforce your MP9 TKI4 with Kyosho IF423HB rear lower arm

The Kyosho IF423HB Hard Rear Lower Suspension Arm serves as a rugged replacement for MP9 TKI4 racers needing added longevity. Built to cope with frequent impacts and hard cornering, it supports reliable lap times and easier setup tuning.

Built for durability and stable handling

Using a higher hardness material, the Kyosho IF423HB reduces unwanted movement under load while maintaining enough compliance for traction. That leads to steadier mid corner balance and more predictable exits.

Simple install, accurate fit

Designed as a direct replacement for the MP9 TKI4 lower rear location, this arm installs with factory mounting points intact. The precise fit reduces install time so you can focus on setup and on track adjustments.
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.

Does the IF423HB affect straight line stability?

The firmer arm helps keep rear geometry more constant under load, which can translate to improved stability on long straights, especially at higher speeds.

Can I use these arms for off road bashing?

They are aimed at on road racing for the MP9 TKI4, but the tougher material will withstand light off road impacts. Expect different handling compared with softer arms designed for bashing.

Should I check anything after installation?

After fitting, inspect for free pivot movement, confirm shock mounting alignment, and run a short test to confirm roll center and toe settings remain as expected.

Are upgrades available for the hinge pins?

Many racers pair harder arms with stainless or hardened hinge pins for durability. Check compatibility and clearances before swapping to heavier pins.

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