For tuners and racers running a Kyosho MP9, the IF422B Rear Hub Carrier is a straightforward upgrade to recover predictable rear response. The Kyosho IF422B is manufactured to match MP9 mounting points so it installs cleanly into existing suspension layouts.
The IF422B reduces play in the rear assembly and helps the MP9 track truer through mid and high speed corners. Keeping hub carriers in good condition preserves alignment and gives more confidence when increasing cornering aggression.
Designed for direct replacement on MP9 models, the rear hub carrier installs without chassis alterations so you can service or upgrade quickly between sessions. Routine replacement prevents progressive wear from affecting handling.
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