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The OS Giken close-ratio gear kit for Nissan Skyline transmissions using the FS5W30A includes close-spaced gears plus a 5th gear and a reinforced input shaft. Built to alter gear spacing for more immediate shift transitions, the kit suits drivers seeking a tighter shift feel and improved drivetrain response in high-demand driving. It replaces select transmission internals while retaining the Skyline-specific transmission fitment.
OS Giken Nissan Skyline FS5W30A Trans 3-Speed Close Ratio Gear Kit w/ 5th Gear and Reinf Input Shaft
