This kit drops the front differential 1" to reduce the CV angle. The diff drop kit is crucial for lifted vehicles and long travel suspension systems that retain 4WD. The kit includes all mounting hardware to drop the differential and factory skid plate. Compatibility 2005-2023 Tacoma 4WD 2007-2014 FJ Cruiser 4WD 2003-2024 4Runner 4WD 2003-2