Overview
The Trail Gear Trail-Creeper Dual Transfer Case Adapter kit, part number 100516-1-KIT, doubles the transfer case gearing so a vehicle can crawl up near anything. It is built around a 2.28 x 4.70 gear set with a 23 spline input and a top shift.
The kit contains all the components needed to adapt a secondary case to an existing transfer case. It fits the 1984-1995 Toyota 4Runner DLX and SR5 models and the 1980-1995 Toyota Pickup trims.
Key features
- 2.28 x 4.70 gear set
- 23 spline input
- Top shift
- Adapts a secondary transfer case to the existing transfer case
- All components for the adapter kit included
Using a low range crawl adapter
A crawl adapter multiplies the gearing of the transfer case, so the drivetrain turns more slowly for each input revolution. That helps with steep climbs, rock steps and slow obstacles, where control matters more than speed. The added gearing also changes how the transmission and axles see load, so most owners pick their trail speeds with that change in mind.
Adapter kits are best installed alongside a full look at the rest of the driveline. Check the driveshaft angles, the axle ratios and the shift linkage before the first trip, since a new gear reduction can expose weak joints or worn parts. Test the engagement in a safe area at low speed, and keep an eye on fluid levels after the first few drives.
Specifications
| Brand | Trail Gear |
|---|---|
| Part number | TGI100516-1-KIT |
| UPC | 70000621598 |
| Gear set | 2.28 x 4.70 |
| Input | 23 spline |
| Shift | Top shift |
| Fitment | Direct fit |
Vehicle fitment
It fits the 1984-1995 Toyota 4Runner and the 1980-1995 Toyota Pickup in the trims given above.
Other Toyota trucks and SUVs fall outside this fit. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Gear sets need professional setup and break-in. Have a qualified drivetrain shop install the adapter and confirm gear engagement before off-road use.
What’s included
The kit includes all components to adapt a secondary case to the existing transfer case. Check the package contents against your installation before starting.
