XSO chains offer quality, performance and unbeatable value. Proprietary RX-ring seals with two lubrication pools give XSO chains 7x longer wear life than standard O-ring chains. Lighter and stronger than the current XSO model and more suitable for today's new modern and more powerful sportbikes. Suitable for 1000cc max street use. Average tensile strength 9,000 lbs. 530 x 114, Natural