OS Giken Cross Gear Set - Nissan S13/S14 Silvia & 180SX/200SX SR20DET (FS5W71C)

OS Giken 5 Speed Cross Gear Set (FS5W71C Transmissions) Vehicle Compatibility:

- Nissan PS13 Silvia (SR20DET)
- Nissan RPS13 180SX (SR20DET)
- Nissan S14 Silvia/200SX (SR20DET)


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0In Stock - Kirrawee, NSW

Ships in 1-2 business days

Available for back order

Lead time 10-15 Days

Click & Collect available from Kirrawee, NSW



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Performance driving and high output engines put a strain on the drivetrain and can sometimes lead to failing components, such as broken gears or input shafts. The goal of the OS Giken Close Ratio Gear Kit is to reinforce the transmission internal components while maximizing an engine's potential by providing custom gear ratios for performance driving.

Each OS Giken gear component is designed and created from high-quality forged materials, and then undergoes hard shot peening, resulting in increased strength and durability. Furthermore, the gears are helical-cut, rather than straight-cut, to maintain a quiet and smooth operation, accomplishing full comfort for street driving as well as reliability for racing.

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 gear set, so this is an excellent upgrade for street-driven vehicles too.

- 5 Speed Gear Set
- Strengthened Input & Main Shafts
- 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

Note: This gear set is designed for the final version of the S14 gearbox, some additional Nissan parts will be required to update earlier S13 versions of the FS5W71C.



Availability 10-15 Days

OS Giken Cross Gear Set - Nissan S13/S14 Silvia & 180SX/200SX SR20DET (FS5W71C) OS Giken Cross Gear Set - Nissan S13/S14 Silvia & 180SX/200SX SR20DET (FS5W71C)

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