A transfer case crawl box and low gear set is a replacement for the low range of gearing needed for rock crawling and related off-roading. 4WD carries TeraFlex, Trail Gear and Advance Adapters crawl boxes and low gear sets that offer proper ratios and various spline configurations. Sometimes you need to modify your transfer case or disassemble it to install these components on your 4x4. They are precision-engineered and affordable when you want to make the upgrade.
For rock crawling, lower transfer case gears give you the control you need to keep your truck on track. Trail-Gear offers an affordable 4.70:1 gear kit for your gear driven Toyota transfer case. Trail-Creeper T-Case gears are available in 21 and 23 spline configurations. Kits include replacement gears, gaskets and seals. Disassembly and modification of transfer case is required for installation. Input gears are precision ground & micro-polished to guarantee the removal of all surface imperfections in the forging.