This is an improved form of the O-ring chains. Due to the special shape of the X-rings, the chain is sealed at four sealing points, the lubricant can not escape. In addition, the X-ring serves as an additional lubricant reservoir.
The life of the chain is extended by about 30%. This technique has been further developed into the XW ring chain at RK. 1x Steel RK 428 XSO Series Chain. Product Type: Chain and Sprocket Kit.
Plate Thickness - Inner: 2mm. Plate Thickness - Outer: 2mm. Tensile Strength (kN): 27.5kN. Weight per 100 links: 1.2kg.
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