This aluminium rear radio post is an RC-scale replacement tailored for the KYOSHO Optima 2016 chassis, supplied as JAZRIDER model JR-OT07B. It acts as the rear attachment for the receiver and radio gear, delivering a firmer point of contact to limit movement under load.
Typically installation makes use of the existing radio tray or the rear bulkhead mounting points; the alloy post replaces the original plastic item for a more positive fix. When installing, align the post to the receiver tray and ensure antenna and power wires are routed away from pivot points to prevent snagging.
From a setup perspective the upgrade is mainly about reliability and component protection rather than direct handling gains; a stable radio mount reduces electrical issues and slightly improves the consistency of on-track balance.
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