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The OS Giken close-ratio gear kit for the FS5W30A transmission is a three-speed close-ratio set provided with input-shaft compatibility for Nissan Skyline FS5W30A applications. Intended to replace standard gears with closer spacing, the kit targets drivers who need transmission internals specifically matched to the FS5W30A gearbox used in supported Nissan Skyline setups.
OS Giken Nissan Skyline FS5W30A Trans 3-Speed w/Input Shaft Close Ratio Gear Kit
