For late model 1000cc+ super and hypersport bikes. Reinforced and manufactured from ultra-high tensile strength steel. The special XW-ring seal offers very little drag; much less than conventional O-ring chains. With 3 outer and 3 inner low pressure ''W-shaped'' sealing lips and an inner centering ring; the XW-ring offers up to 50% longer chain life when compared to the classic O-ring. Great choice when your chain quality & strength expectations are extremely high. - For extreme hypersport bikes - With excellent XW-ring 6-lip low pressure sealing - Low friction - Expected street use 20.000km and up - Strongest; long-lasting chain in the market at this moment - Track perfect; featuring high performance for the best lap time as proven by international race teams - Tensile strength 49.8kN - Weight 2.22kg per 100 links - With riveted master link - Application 750cc / 1400cc supersport / hypersport / racing