The Kyosho OTW101-03 Ball Differential Screw is the correct service screw for OPTIMA models, helping to keep your ball differential functioning with consistent preload. It is a compact item that plays a key role in keeping the drivetrain predictable.
Made to suit OPTIMA differential assemblies, this screw secures the ball diff components and helps prevent slippage under load. Its precision thread profile supports reliable operation whether you are running on carpet, bitumen or loose surfaces.
Clean the diff assembly and check for burrs before installing the Kyosho OTW101-03. Begin threading by hand to ensure correct alignment, then nip up to the feel you use for your setup. Regular checks after a few runs will confirm it is holding correctly.
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