The diff bulkheads were designed for extreme durability, while providing comfortable access for tuning and maintenance. Diff bulkheads are a vital chassis component, housing both front and straight back differentials and supplying mounting points the suspension system mounts and shock towers. To improve the consistency the differential performance throughout each run, the device package covers are milled down for extra venting to help control diff conditions. This stops overheating the diff oils and guarantees more consistent handling during long mains and stretches periods between rebuilds. Fits both GTX and GTXE.