The Yokomo S4-118BSA urethane battery spacer is tailored for the YZ-4S chassis and holds compact Li-po packs steady during demanding off-road runs. Its firm urethane construction improves battery retention on uneven terrain.
Installing the Yokomo S4-118BSA in a YZ-4S fills the empty space from a short pack, stopping lateral movement and helping maintain steady voltage under load.
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