Yokomo YOKB4-415S steering block pair is a direct replacement for the steering knuckles on the B-MAX4 III chassis, covering left and right sides to maintain front-end symmetry. Designed for RC touring use, the parts focus on the hub interface and suspension link connections.
Installation notes: remove the stock steering block one side at a time, keep original hardware and bearings where serviceable, and confirm wheel bearing preload and link alignment when refitting. These components sit in the steering assembly to control toe, caster and ackermann; mark left and right orientation and verify steering stops and servo horn clearance before final torque.
Tuning guidance: fitting new steering blocks can be part of stepwise front-end setup. Check static toe, test toe changes dynamically, alter steering link lengths for preferred ackermann, and inspect tie-rods and kingpins for play after a few sessions to maintain consistent steering feel.
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