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The OS Giken close‑ratio gear kit for the Nissan FS5W30A transmission includes a 3‑speed close‑ratio set plus a 5th gear, providing a modified gearset for Skyline transmission applications. This kit is intended to tighten gear spacing while retaining an overdrive gear, offering a tailored ratio arrangement for drivers seeking different shift characteristics without changing the transmission housing.
OS Giken Nissan Skyline FS5W30A Trans 3-Speed Close Ratio Gear Kit w/ 5th Gear
