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OS Giken Close Gear Set
The OS Giken close ratio gear sets offer greatly improved strength and gear ratios designed for racing applications.
OS Giken - Close Gear Set - RB26DETT
OS Giken - Close Gear Set - RB26DETT
OS Giken - Close Gear Set - RB26DETT
OS Giken - Close Gear Set - RB26DETTROS Giken - Close Gear Set - RB26DETT
OS Giken - Close Gear Set
OS Giken - Close Gear Set - RB26DETT
OS Giken - Close Gear Set - RB26DETTROS Giken - Close Gear Set - RB26DETT
OS Giken - Close Gear Set - RB26DETTROS Giken - Close Gear Set - RB26DETT
OS Giken - Close Gear Set - RB26DETTROS Giken - Close Gear Set - RB26DETT
OS Giken - Close Gear Set
The OS Giken close ratio gear sets offer greatly improved strength and gear ratios designed for racing applications. The normal synchromesh and helical gear design ensures operation almost as quiet and compliant as standard equipment. This ensures the OS Giken close gear set is as suited to the high performance street and circuit vehicle.
Features
- Replaces the first 3 or full 5 gears depending on kit
- RB26DETT model suitable up to 800hp
- SR20DET model suitable up to 600hp
Notes
Discontinued due to extremely long unknown lead-times of more than 1-2 years.
| Part | Gear Ratio | Price | Order | |
|---|---|---|---|---|
| FS5R30A-5 | ||||
| 3 Speed + 5th Gear Set | 2.695-1.703-1.236-1.0-0.826 | | DISCONTINUED This part is no longer available | |
| FS5R30A | ||||
| 3 Speed Set | 2.695-1.703-1.236 | | DISCONTINUED This part is no longer available | |
| FS5W71C | ||||
| 3 Speed Set | 2.717-1.722-1.232 | | DISCONTINUED This part is no longer available | |
| FS5W71C-5 | ||||
| 5 Speed Set with input shaft | 2.596-1.765-1.250-1.0-0.833 | | DISCONTINUED This part is no longer available | |
| OS-FC3S-3SP | ||||
| R5M-D - 3 Speed | | DISCONTINUED This part is no longer available | ||
| OS-FC3S-5SP | ||||
| R5M-D - 5 Speed with Input Shaft | | DISCONTINUED This part is no longer available | ||
| OS-FD3S-3SP | ||||
| R15M-D - 3 Speed | | DISCONTINUED This part is no longer available | ||
| OS-FD3S-5SP | ||||
| R15M-D - 5 Speed with Input Shaft | | DISCONTINUED This part is no longer available | ||
About OS Giken
OS Giken was founded in 1973 in Okayama by Masaharu Okazaki as the Okazaki Speed Technology Research Institute, a tuning shop for cars and motorcycles. It became OS Giken Co., Ltd. in 1988. Okazaki built his own high-revving twin-cam engines, the TC16 and TC24-B1, and began making stronger drivetrain parts because stock ones could not take the power.
A Violet with a TC16-MA II won the 1980 All Japan All-Star Dirt Trial, and a 280Z with a TC24-B1 took third in its class at the 1982 SCCA Pro Rally in Nevada. OS Giken still makes clutches, limited-slip differentials and gearboxes, including the OS-FR7 7-speed sequential, from its base in Okayama.
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Since the year 2000, NENGUN has supplied over 500,000 parts direct from Fukuoka, Japan to 170 countries worldwide. If you have any questions, our experienced and friendly customer service team is always happy to help, please send us an enquiry.
