Bolt In Crawler Box. This is the Dual Case unit that will bolt in between your transmission and stock transfer case. You have the option of 2.28:1 or 4.70:1 gears and 21-spline or 23-spline. Fits 1979-95 Toyota trucks and 4runners with a gear driven RF1A transfer case.
Dual transfer case reduction unit featuring 21 or 23-spline. Complete, ready to bolt-on, reduction unit featuring dual adapter. All necessary hardware included. Includes factory shifter assembly with a Marlin Crawler Turtle Shift Knob Unit installs between transmission and transfer case. Floorboard and drive shaft modifications are required. Fits 1979-1995 gear driven transfer cases. 4 & 5 Speed application only.