Front & back bulkheads function a horizontal split design (HS) to retain easy diff access while including the valuable new diff height modification. The initial design of bulkheads utilizes an inline bushing to alter the positioning and height associated with bevel drive gear. As well as accommodating the diff height alterations, additionally permits the front central driveshaft to operate with a decreased angle for less friction and wear regarding the CV joint elements and improved driveline effectiveness. The XB4 bulkheads allow easily differential access for setup modifications or servicing by eliminating just 4 screws through the top gear package address while the lower area continues to be installed to the chassis. This super-fast diff access is featured on both front side and back gearboxes. The super-strong, slim bulkheads give you the needed approval for the redesigned suspension holders with additional set-up range possibilities. Fits XB4'21
