The Yokomo S4-118BM Battery Mount Set is made to mate with the YZ-4S chassis and hold your battery firmly in place. Its design limits unwanted shifting so the pack stays seated through hard cornering and jumps, helping maintain consistent balance.
Fitting the Yokomo S4-118BM on a YZ-4S reduces battery movement that can unsettle the car. With the pack locked down, steering feel and mid-corner stability become more predictable, useful for racers tuning handling and tyre wear.
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