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OS Giken Gearbox

The OS Giken OS-88 gearbox is a sequential 6-speed gearbox

The OS Giken OS-88 gearbox is a sequential 6-speed gearbox designed to suit the BNR32 and BCNR33 GT-R.

It can also be used in the BNR34 but will require an R33 transfer case and  front prop shaft.
It bolts up to the Nissan transfer case and has a bellhousing to suit any RB engine.
It also comes complete with shifter, digital shift indicator and pull-up reverse lock-out sleeve.


OS Giken designed this sequential gearbox to handle 1500hp, while retaining quiet helical-cut gears.
To do this the gear axis has been increased to 88mm, while most internal parts are forged.
The dog-engagement of the gears allows extremely fast shifting operation.This gearbox comes with the following gear ratios:

1st 2.609
2nd 1.934
3rd 1.521
4th 1.210
5th 1.000
6th 0.852

Features

  • OS-88 Sequential Transmission
  • OS-88 Transmission Member
  • Includes shift indicator and the shifter
  • Note : OS-88 does not included a transfer case

Notes

Instruction for BNR34.

  1. The Transfer is used with for BCNR33.  33100-23U00 - Nissan OEM Transfer 
  2. The Speed Meter Gear Unit is used with for BNR34
  3. The propeller shaft is used with for BCNR33
    1. 37300-24U00 - Propeller Shaft Front 
    2. 37200-05U00 - Propeller Shaft Rear
  4. Clutch disc is used with exclusive product.
  5. Clutch Sleeve and Bearing is used with exclusive product
  6. Need to change Pull to Push. Then needs the following parts.
    1. 30620-21U01 - Nissan OEM Operating Cylinder 
    2. 30531-01S00 - Nissan OEM Release Fork 
    3. 30534-E9000 - Nissan OEM Pivot Spring 
    4. 30514-14600 - Nissan OEM Sleeve Spring 

Vehicle Product   Price Order
Skyline GT-R - BCNR33
13-Indicator Unit, 18-Connect Cable, 19-Black Box, 20-Sensor Cable + Indicator Kit
OS-88 Kit
USD $ 1,068.90
Skyline GT-R - BNR32
1x Transmission, 1x Trans member, 1x OS Clutch Kit R3C with Sleeve Bearing, 1x shift indicator and the shifter, OEM normal transfer not included
BNR32 OS-88 Sequential Transmission
USD $ 19,002.61
Skyline GT-R - BNR32
13-Indicator Unit, 18-Connect Cable, 19-Black Box, 20-Sensor Cable + Indicator Kit
OS-88 Kit
USD $ 1,068.90
Skyline GT-R - BNR34
OS Giken Transmission Member
USD $ 593.83
Skyline GT-R - BNR34
13-Indicator Unit, 18-Connect Cable, 19-Black Box, 20-Sensor Cable + Indicator Kit
OS-88 Kit
USD $ 1,068.90
Skyline GT-R - BNR34
Clutch Sleeve and Bearing
OS CSB
USD $ 104.52
Skyline GT-R - BNR34
Sequential Transmission
OS-88 Sequential Transmission
USD $ 13,301.83
Optional Parts:
OEM Sleeve Spring
30514-14600
USD $ 7.50
Optional Parts:
OEM Release Fork
30531-01S00
USD $ 25.22
Optional Parts:
OEM Pivot Spring
30534-E9000
USD $ 7.01
Optional Parts:
OEM Operating Cylinder
30620-21U01
USD $ 67.10
RB26DETT
Provide S/N in Order Comments - NO WARRANTY
Replacement Input Shaft
USD $ 844.92
Product   Order
Skyline GT-R - BCNR33
13-Indicator Unit, 18-Connect Cable, 19-Black Box, 20-Sensor Cable + Indicator Kit
OS-88 Kit
USD $ 1,068.90
Skyline GT-R - BNR32
1x Transmission, 1x Trans member, 1x OS Clutch Kit R3C with Sleeve Bearing, 1x shift indicator and the shifter, OEM normal transfer not included
BNR32 OS-88 Sequential Transmission
USD $ 19,002.61
Skyline GT-R - BNR32
13-Indicator Unit, 18-Connect Cable, 19-Black Box, 20-Sensor Cable + Indicator Kit
OS-88 Kit
USD $ 1,068.90
Skyline GT-R - BNR34
OS Giken Transmission Member
USD $ 593.83
Skyline GT-R - BNR34
13-Indicator Unit, 18-Connect Cable, 19-Black Box, 20-Sensor Cable + Indicator Kit
OS-88 Kit
USD $ 1,068.90
Skyline GT-R - BNR34
Clutch Sleeve and Bearing
OS CSB
USD $ 104.52
Skyline GT-R - BNR34
Sequential Transmission
OS-88 Sequential Transmission
USD $ 13,301.83
Optional Parts:
OEM Sleeve Spring
30514-14600
USD $ 7.50
Optional Parts:
OEM Release Fork
30531-01S00
USD $ 25.22
Optional Parts:
OEM Pivot Spring
30534-E9000
USD $ 7.01
Optional Parts:
OEM Operating Cylinder
30620-21U01
USD $ 67.10
RB26DETT
Provide S/N in Order Comments - NO WARRANTY
Replacement Input Shaft
USD $ 844.92
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