Yokomo YOKB4-415S steering block pair is designed for the B-MAX4 III and replaces both left and right knuckles to restore or refine front-end geometry. The set targets the mechanical interfaces that position the wheel hub and join suspension links.
Installation notes: take out the factory steering block one side first, keep original bearings and fixings if fitment is sound, and inspect bearing preload and linkage alignment on reassembly. These components influence toe, caster and ackermann characteristics; ensure correct orientation and that servo horn clearance is maintained before tightening.
Tuning guidance: swapping steering blocks can change steering response; verify static toe, then test on track to fine-tune ackermann by adjusting link length. Check for any play at the tie-rods and kingpins after initial runs to preserve steering precision.
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