Because it is reciprocating and stiff, the spring retainer is considered a substantial portion of the valvetrain in terms of mass. If you try to thin the retainer to save weight, you may end up with stiffness and increased stress. As a result, the spring retainer's design is given careful study. The spring retainer materials utilized have a variety of consequences. Steel Spring Retainer created by Aztech Innovations with numerous characteristics that will fit all Aztech Scythe gearbox models with the 4 lug locking tab. Visit our website for more details.