Kyosho IF423HB Hard Rear Lower Suspension Arm for MP9 TKI4 - Race Ready  [KY-IF423HB]

Kyosho IF423HB - Hard Rear Lower Suspension Arm (LR/MP9 TKI4)
Price:
CAD$14.87
Brand:
Kyosho
Model:
KY-IF423HB
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Upgrade your MP9 TKI4 with Kyosho IF423HB for tougher rear suspension

The Kyosho IF423HB Hard Rear Lower Suspension Arm is a rugged replacement part built specifically for the MP9 TKI4 platform. Made to endure track abuse, this arm increases component life while helping drivers get steadier, more predictable handling during hard laps.

Strength that still lets you tune handling

Manufactured from a higher hardness material, the Kyosho IF423HB reduces unwanted flex while keeping enough compliance for good traction. The result is sharper cornering and more consistent feedback through high speed sections.

Direct fit installation for quick track return

As a direct replacement for the MP9 TKI4 lower rear arm, the IF423HB installs without chassis modification. Accurate mounting points and reliable dimensions make swapping arms straightforward so you spend less time in the pits and more time testing setups.
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 the IF423HB fit earlier MP9 versions?

The IF423HB is intended for the MP9 TKI4. Some older MP9 variants have different mounting geometry, so check your chassis points before assuming compatibility.

How does the harder material affect cornering?

A firmer arm cuts down flex, which sharpens turn-in and gives crisper steering. You may need to adjust camber or shock settings to balance grip on low traction surfaces.

Any installation tips for the rear lower arm?

Use the correct hardware, check for smooth hinge pin movement, and torque fasteners to the recommended spec. Verify suspension travel and wheel alignment after installation.

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