ProX chromed crank pins are specially designed for the application. Every ProX crank pin is machined precisely and treated to get the best hardness and properties to stand the extreme conditions where it is used for. Our 4 stroke crank pins have precision located oil canals to maximize oiling under extreme conditions.; ProX Racing Parts headquarters are located near Amsterdam, The Netherlands. Founded in 1975, ProX Racing Parts is now distributed in a significant number of countries worldwide. Domestic as well as international dealers and distributors are being served from our facilities in Nieuw Vennep Netherlands, Mentor Ohio, and Woodstock Ontario Canada.