Description
**OS-88 TRANMSISSIONS ARE BUILT TO ORDER. LEADTIME TO SHIP IS ROUGHLY 6 MONTHS FROM TIME OF ORDER**
The OS-88 6-Speed Sequential Transmission is specifically designed to maximize RB26’s engine performance potential with tested and optimized gear ratios.
The “88” of OS-88 designates the distance of 88 mm between gear axes. By optimizing the gear tooth width and axes distance, we were able to maximize the size of gears used in OS-88 to achieve a significant increase in strength within the dimensions of a BNR32 / BCNR33 transmission. Along with its unique design, its components are manufactured with carefully selected raw-forged materials.
The result is a sequential transmission optimized for RB26, that can handle up to 1500 horsepower.
Aside from its optimal gear ratios and outstanding durability, we utilized a unique dog-ring structure and helical-cut gears to minimize the drivetrain noise and shifting efforts
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Comes with bellhousing and shifter assembly
- Helical-cut gears for quieter street performance
- Non-synchromesh dog-ring structure
- For use in BNR32 / BCNR33, factory transfer case and prop shaft is reuse
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For use in BNR34, BNR32 / BCNR33 transfer case and prop shaft is required
- Available with 3 different gear ratio options
Standard & Optional Gear Ratios
| | 1st | 2nd | 3rd | 4th | 5th | 6th |
| Standard | 2.609 | 1.934 | 1.521 | 1.210 | 1.000 | 0.852 |
| Option 1 | 2.609 | 1.934 | 1.521 | 1.210 | 1.000 | 0.785 |
| Option 2 | 2.890 | 1.981 | 1.468 | 1.174 | 1.000 | 0.757 |
| Option 3 | 2.516 | 1.865 | 1.468 | 1.174 | 1.000 | 0.822 |
Fitment:
- BNR32
- BCNR33
- BNR34
Included Components:
- Bellhousing
- Shifter Assembly
Installation Notes:
- Requires OEM BNR32/BCNR33 transfer case and prop shaft
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