Complete FRONT/REAR differential set with larger diff gears for increased traction. Provides perfectly matched engagement which provides more smooth procedure and less resistance & somewhat greater lifetime. Rubber-sealed composite differential housings feature metal inserts which can be by hand precision ground following the molding process to ensure a perfect match no vibration. Differential interior gears are manufactured from pushed steel, temperature treated, and machined for ultra-high precision and smooth procedure. 46T large external bevel gear constructed from HUDY metal, precision machined on a particular gear device. Diff outdrives are made from world-renowned HUDY Spring metal, accuracy ground as well as heat treated for high precision and ultra-long life. Outdrives are especially lightened to reduce rotating weight while staying super strong.