This Yokomo BM-415CA accessory is a set of front and rear hub carrier spacers supplied as standard parts for B-MAX4 and B-MAX2 derived kits. The spacers are intended for RC-scale use to alter hub spacing and fine-tune wheel position without changing the carrier itself.
Use these spacers to adjust track width in small increments, correct minor wheel alignment, or experiment with steering and handling balance during setup sessions. They come in two visual variants so you can choose a discreet or clear look to match your chassis aesthetic.
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