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OS Giken Close Gear Set
OS Giken

The OS Giken close ratio gear sets offer greatly improved strength and gear ratios designed for racing applications.

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.

  • Replaces the first 3 or full 5 gears depending on kit
  • RB26DETT model suitable up to 800hp
  • SR20DET model suitable up to 600hp
  • RX7 FD3S 

NOTE: OS GIken do not keep them in stock and they take up to 1 year to be made to order, please confirm with us before purchase.

 

This part usually ships 12 days after payment.

Product Version Price Order
FC3S 3 Speed
Mazda - RX7 FC3S - R15M-D - 3 Speed
USD $ 1,717.59
USD $ 2,230.63

Vehicle Compatibility

Mazda - RX-7 - FC3S

Vehicle Compatibility

Mazda - RX-7 - FC3S
FC3S 5 Speed
Mazda - RX7 FC3S - R15M-D - 5 Speed + Input Shaft
USD $ 2,105.92
USD $ 2,734.95

Vehicle Compatibility

Mazda - RX-7 - FC3S

Vehicle Compatibility

Mazda - RX-7 - FC3S
FD3S 3 Speed
Mazda - RX7 FD3S - R15M-D - 3 Speed
USD $ 1,717.59
USD $ 2,230.63

Vehicle Compatibility

Mazda - RX-7 - FD3S 2-3
Mazda - RX-7 - FD3S 4
Mazda - RX-7 - FD3S 5

Vehicle Compatibility

Mazda - RX-7 - FD3S 2-3
Mazda - RX-7 - FD3S 4
Mazda - RX-7 - FD3S 5
FD3S 5 Speed
Mazda - RX7 FD3S - R15M-D - 5 Speed + Input Shaft
USD $ 2,105.92
USD $ 2,734.95

Vehicle Compatibility

Mazda - RX-7 - FD3S 2-3
Mazda - RX-7 - FD3S 4
Mazda - RX-7 - FD3S 5

Vehicle Compatibility

Mazda - RX-7 - FD3S 2-3
Mazda - RX-7 - FD3S 4
Mazda - RX-7 - FD3S 5
FS5R30A
Nissan - RB26DETT - 3 Speed Set - 2.695-1.703-1.236
In stock and ready to ship!
USD $ 1,717.59
USD $ 2,230.63

Vehicle Compatibility

RB26DETT

Vehicle Compatibility

RB26DETT
FS5R30A
Nissan - RB26DETT - 5 Speed Set - 2.695-1.703-1.236-1.0-0.826
USD $ 2,427.02
USD $ 3,151.98

Vehicle Compatibility

RB26DETT

Vehicle Compatibility

RB26DETT
FS5W71C
Nissan - SR20DET FR - 3 Speed Set - 2.717-1.722-1.232
USD $ 1,254.59
USD $ 1,629.33

Vehicle Compatibility

SR20DET

Vehicle Compatibility

SR20DET
FS5W71C
Nissan - SR20DET FR - 5 Speed Set - 2.596-1.765-1.250-1.0-0.833
USD $ 2,105.92
USD $ 2,734.95

Vehicle Compatibility

SR20DET

Vehicle Compatibility

SR20DET
RB26DETT Input Shaft
Option - RB26DETT Strengthened Input Shaft
In stock and ready to ship!
USD $ 500.35
USD $ 649.79

Vehicle Compatibility

RB26DETT

Vehicle Compatibility

RB26DETT
SR20DET Main Shaft
Option - SR20DET Strengthened Main Shaft
USD $ 567.55
USD $ 737.08

Vehicle Compatibility

SR20DET

Vehicle Compatibility

SR20DET
Best Price Guarantee
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Nengun Performance
NENGUN CO. LTD
4798-455 Imazu
Nishi-ku, Fukuoka
Japan, 819-0165

Kobutsuho No.
901080810037