Inferno MP Series NEO 3.0 & 4.0 Rear Swing Shaft - Kyosho IF144B  [KY-IF144B]

Rear swing shaft overview for Inferno MP Series

The Kyosho IF144B swing shaft is a direct replacement designed for the rear suspension pivot on Inferno MP Series NEO 3.0 and 4.0 buggies. This section covers fit, simple installation notes, and how the swing shaft affects rear suspension geometry and routine care.

Functionally, the swing shaft locates the rear hub assembly and provides the rotational axis for the swing arm. Over time, bushings or the shaft itself can wear and introduce play that harms traction and handling. Replacing a worn shaft restores the intended pivot alignment and reduces unwanted lateral or vertical movement at the wheel.

Installation normally requires removing the rear hub and disassembling the swing arm pivot area. Inspect retaining clips, bushings, and any associated screws or pins during replacement and reuse original hardware where appropriate. Use the correct-size hex drivers for fasteners and confirm there is no binding after assembly by moving the swing arm through its travel range.

From a setup point of view, the benefit is practical rather than outright performance: a properly fitted swing shaft reduces slop that can mask suspension behavior, allowing shock tuning and anti-squat adjustments to act predictably. When diagnosing rear-end instability start by checking shaft wear and hub tightness before changing spring rates or shock lengths.

Compatibility

• Inferno MP Series NEO 3.0
• Inferno MP Series NEO 4.0

Use the IF144B when restoring correct rear pivot geometry or replacing a visibly worn shaft, and verify part fit against the original component before final reassembly.