This is an optional part-gear differential unit corresponding to the running of a new era. Even in a situation prone grease out of the ball differential in de category Modification powerful. to maintain the dominant of the differential using the rear differential gear this unit. to maintain constant cornering characteristics. You can also use the front in the stock category. and eliminate understeer of solid axle when using. if you change the viscosity of the grease to be enclosed in a sealed case in the course. it is also possible to fine-tune the degree handed def.
Made of aluminum which gave a hard-anodized. joint cup long life type to attach the protector to the dog bone. Gear is a method of bevel 4 resin lightweight. With size are the same as standard. is a bolt-on can be installed before or after the BD5 series.