The Yokomo YOKBM415S is a front steering block intended for use with the Yokomo B-Max4 chassis. As a replacement upright it supports front suspension and steering assemblies, enabling hobbyists to restore worn parts or change components during setup adjustments.
When installing, remove the front upright, swap over any reusable bearings and fasteners, fit the YOKBM415S into the hub carrier, and check the steering linkage for free movement. Once reassembled, inspect wheel alignment and ensure steering recentres prior to running the model.
In setup terms the steering block interacts with toe, caster and ackermann geometry, so changing blocks should be evaluated as part of iterative tuning. Inspect bearing seats and ball studs for signs of wear when replacing the upright to keep geometry within the intended range for your B-Max4.
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