Product Description
Looking for a Toyota LandCruiser HZJ80 21T Modified Gearbox? Gympie 4WD Spares supplies professionally reconditioned HZJ80 exchange gearboxes featuring revised 2nd and 5th gear ratios for improved drivability, lower engine RPM and a more relaxed highway driving experience.
Professionally Reconditioned with 5th Gear Upgrade
Our Toyota LandCruiser HZJ80 21T Modified Gearbox combines a professionally reconditioned gearbox with revised factory 2nd and 5th gear ratios. The revised 2nd gear provides smoother spacing between the lower gears, while the upgraded 5th gear reduces engine RPM by approx 400 RPM during highway cruising, helping improve fuel economy and reducing engine noise on long-distance trips. Every gearbox is stripped, inspected and rebuilt using premium quality components before being precision assembled by experienced technicians.
Why Choose the 5th Gear Upgrade?
- Over 400 RPM reduction in 5th gear
- Improved fuel economy on highway driving
- Quieter, more relaxed cruising
- Better spacing between 1st, 2nd and 3rd gears
- Ideal for touring and long-distance travel
- Professionally reconditioned exchange gearbox
Gear Ratio Comparison
| Gear | Original | Modified |
|---|---|---|
| 1st | 4.529 | 4.529 |
| 2nd | 2.464 | 2.294 |
| 3rd | 1.490 | 1.490 |
| 4th | 1.000 | 1.000 |
| 5th | 0.881 | 0.750 |
| Reverse | 4.313 | 4.313 |
Product Specifications
- Suits Toyota LandCruiser HZJ80 21T
- Complete modified gearbox assembly
- Professionally rebuilt exchange unit
- Revised factory 2nd and 5th gear ratios
- Full set of new synchros fitted
- Premium Japanese bearings and seals
- Genuine Toyota and quality aftermarket components
- Built to Toyota specifications
- Daily Australia-wide freight
- 12 month / 20,000 km warranty
Every Gympie 4WD Spares Gearbox is Professionally Rebuilt
Every gearbox undergoes a complete reconditioning process before leaving our workshop.
- Complete disassembly and inspection
- Full set of new synchros
- Premium Japanese bearings and seals
- Genuine Toyota components where available
- Quality aftermarket replacement parts from trusted suppliers
- Precision assembly to factory specifications
- Quality control inspection before dispatch
Each gearbox is rebuilt to provide smooth gear changes, quiet operation and long-term reliability.
Common Signs Your HZJ80 Gearbox Needs Replacement
- Gearbox whine or bearing noise
- Crunching when changing gears
- Difficulty selecting gears
- Jumping out of gear
- Oil leaks from the gearbox
- Metal contamination in gearbox oil
Replacing a worn gearbox early can help prevent further damage to other driveline components.
Built for the Toyota LandCruiser HZJ80
The Toyota LandCruiser HZJ80 remains a popular choice for touring, towing and off-road travel. Whether your vehicle is used for long highway trips, weekend four-wheel driving or everyday work, this modified gearbox is designed to improve the driving experience while maintaining dependable reliability.
Exchange Unit Information
This gearbox is supplied on an exchange basis. An exchange deposit of $750 applies when purchasing your gearbox and is refunded once your exchange unit is returned and assessed as serviceable. If you don’t have an exchange unit available, contact our team to discuss available options.
Daily Australia-Wide Freight
Gympie 4WD Spares dispatches modified gearboxes daily to customers throughout Australia.
Professional Installation Recommended
Professional installation by an experienced transmission specialist is strongly recommended to ensure correct fitment, reliable operation and warranty compliance.
Warranty
Every Gympie 4WD Spares modified Toyota LandCruiser HZJ80 21T gearbox is backed by our 12 month / 20,000 km warranty.
Looking for the Standard Gearbox?
If you’re looking for a professionally reconditioned gearbox without the revised gear ratios, we also supply a standard Toyota LandCruiser HZJ80 21T gearbox. View our standard HZJ80 21T gearbox for more information.
Frequently Asked Questions
What is the benefit of the 5th Gear Upgrade?
The revised 5th gear reduces engine RPM during highway driving for quieter, more relaxed cruising while helping improve fuel economy.
What does the revised 2nd gear do?
The revised 2nd gear provides smoother spacing between 1st, 2nd and 3rd gears, improving drivability in everyday driving and touring conditions.
Is this a complete gearbox?
Yes. This product is supplied as a complete professionally reconditioned gearbox assembly.
Is this supplied on exchange?
Yes. This gearbox is supplied on an exchange basis, with the exchange deposit refunded once your serviceable exchange unit is returned.
Do you freight Australia-wide?
Yes. Gympie 4WD Spares dispatches reconditioned and modified gearboxes daily throughout Australia.
How do I know this gearbox suits my LandCruiser?
Contact Gympie 4WD Spares with your VIN or vehicle details and we’ll confirm the correct gearbox before ordering.
Need Help Choosing the Right Gearbox?
Whether you’re deciding between our standard HZJ80 21T gearbox or the modified 5th Gear Upgrade, our team can help you choose the best option for your LandCruiser and how you use it.
