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Nissan Silvia 200SX 5-speed close-ratio gearset by OS Giken for S13, S14
OS giken close ratio gearset for FS5W71C gearbox (S13 and S14 SR20 type only), 5-gear kit including input shaft and main shaft
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OS Giken close-ratio gearsets offer greatly increased gear strength, along with closer gear ratios to suit racing applications. The retention of normal synchromesh parts and a helical gear design means the gears are still almost as quiet as a standard gearset, so this is an excellent upgrade for street-driven vehicles too.

OS Giken 5sp ratios: 2.596, 1.765, 1.250, 1.000, 0.833
Standard ratios: 3.321, 1.902, 1.308, 1.000, 0.759

This gearset is designe for the final version of the S14 gearbox, some additional Nissan parts will be required to update earlier S13 versions of the FS5W71C.
Please note this gearset can not be used in R32 gearboxes.

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