This aluminium rear knuckle arm is an aftermarket replacement for Tamiya MF01X models, supplied as a 1pr set to replace the original plastic knuckles. It is intended to provide a stronger mounting point for the rear hub on tuned cars and regular driving alike.
The metal knuckle changes the rear steering stiffness and can alter toe and camber response under load compared with stock parts. It is useful when you need a firmer pivot for suspension tuning and more repeatable setup measures after adjustments.
Install by removing the rear hub carriers and associated fasteners, transferring bearings or pins from the factory units, then fitting the aluminium knuckle with the original hardware and thread locker where advised. After installation, confirm suspension travel and wheel alignment before running the model.
Fit this aluminium knuckle to gain a more durable rear hub mount on MF01X cars and to support finer adjustments when dialling in handling.
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