Pro-X 520X-Ring Drive Chain

• Exclusively manufactured for ProX by the reputable and leading OEM factory in Japan
• Pins features special treatment providing an extremely hard coating, leaving a softer inside to increase strength while reducing overall chain wear
• Pins are heavy press-fitted and have quad staked riveting for ultra-strong connection
• Solid-type bush, roller and plates are all heat-treated for incredible tensile strength in combination with low friction and high wear resistance
• Inner plates are designed in specific shape and in combination with unique lightening hole resulting in 3% overall lighter chain
• X-Ring type chain uses QX-type seal offering 40% less friction and at least 150% increased durability over standard MX chain
• All chains are pre-stressed and pre-stretched to reduce initial chain stretch and immediate performance
• Chains come with a clip-type chain link as standard
• Separate chain links available for each type of chain

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