The IF489B steering rod set consists of two 4x50mm links designed for the Inferno MP9 TKI4 chassis, intended to restore accurate steering linkage operation. These parts are used when bent or worn rods have degraded steering feel or accuracy.
Fitment and role: the rods link the servo output to steering knuckles and must match original length and thread orientation to preserve toe and steering geometry. Replace damaged links during maintenance or when reinstating original handling after an impact.
Installation notes: verify rod end compatibility with your ball studs and start threads by hand to avoid cross-threading. Replace matching links if wear is present, then check steering throw and toe after installation. Tighten fittings to a secure fit while avoiding over-clamping ball cups.
For MP9 TKI4 drivers the IF489B pair is a convenient spare to maintain consistent steering geometry across track sessions and setup changes.
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