The Yokomo B10-302MBA is a brass motor mount designed for the BD10 on-road chassis family. As an RC-scale accessory, it replaces the center motor mount with a heavier brass unit to add mass without relocating add-on weights that can upset chassis balance.
Switching from the standard aluminium mount to the brass B10-302MBA increases the motor-mount mass from the quoted aluminium figure of 16g to 50g of brass, a net gain of about 34g. Because the mount sits at the machine centerline, the added mass helps reach minimum race weight while preserving lateral balance and predictable handling.
Installation is a direct replacement for the BD10 series motor mounting points; the part is intended to work with the listed BD10 variants and to serve as a tuning option for racers and tuners who need to adjust vehicle weight distribution without adding asymmetric ballast.
For BD10 chassis users seeking a simple way to add central mass and meet race weight targets, the B10-302MBA provides a direct-fit brass option that maintains motor alignment and helps preserve chassis balance compared with externally mounted ballast.
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