Raybestos' new Opti-Cal calipers are manufactured with a new caliper body, brackets, and components, including pistons, lubricated guide pins, and pad mounting hardware, to ensure they fit and function correctly. Aluminum or zinc plated castings deliver corrosion prevention, and the zinc finish provides all-weather protection and inhibits rust. 

All Opti-Cal calipers undergo significant levels of testing to ensure adherence to global industry standards such as SAE J1603, JASO C448, QC/T 592-2013 and ASTM B117. The calipers undergo temperature durability testing, leak-free pressure testing, functionality testing, and environment exposure testing to guarantee trouble-free operation, proper braking function, and the best possible performance, according to the company.