Issued from the very long experience in chain manufacturing of CZ factory (since 1929), the 219 o-ring is an O-ring chain that uses high-tech technologies to ensure very long lifetime. This chain has been developed in order to supply the top quality racing product for the karting branch all around the world. The top quality certified raw material for these chains is supplied just from the best German and Austrian steel suppliers (in fact the best steel suppliers of the world !) The complete production process is done into CZ factory : stamping, heat treatment, assembling, including the automatic quality check and pre-stretching process. Especially the pins are manufactured with a special hard surface, wich guaranteed long durability of the chains and fatigue + dynamic resistance. This.
