Special part of the S2000 made using aluminum forging method. The S2000 lowers the height of the drive shaft and rotates with the inverted angle of the drive shaft, and the joints and bearings are constantly loaded. As a result, it can significantly shorten the life of the drive shaft. (There are many retires due to damage to the drive shaft, even with super durability) By installing this product with a thickness of 0.4 inch (10 mm), the shaft can be corrected at an angle that is naturally designed to reduce the load and extend the life of the drive shaft to twice as long. (*Comparison to our company) A must-have item for sports riding at all stages from circuit to street. Especially for vehicles that use high grip tires or mechanical LSD.