As the successor to the proven 428H, the 428HD uses new technology to produce the rollers. Previously, the rolls were wound from sheet metal strips, which created a seam and therefore a weak point. With the help of the new technology, the rolls are made from round material, thus avoiding a seam. Compared to the standard 428D chain, the 428HD is reinforced with thicker plates and therefore has a significantly higher tensile strength. DID is the leading original equipment manufacturer with almost 70% of all Japanese motorcycles as well as many European brands. Leading racing teams in road and off-road sports rely on DID technology. An exclusive hardening process for the pins increases the performance of the chains. This special process creates a hardened layer on the surface. However, the bo.
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