The BD-516L is a low-friction front drive belt designed for Yokomo BD7 and BD5 chassis. Molded from a softer compound than stock belts, it reduces drag in the front drivetrain and is supplied as a single replacement part for 1/10 on-road models where drivetrain losses influence setup and feel.
Practical notes: install the belt along the factory routing on supported BD7/BD5 variants using your normal disassembly routine. Check belt tracking and fine-tune tension after fitting. Because the material is softer, expect a different tension curve versus stock; adjust to maintain drive without excessive preload.
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