520 Pitch Gold O-Ring Chain 140 Links Custom Extended Swingarm Motorcycles Brand New 520 Pitch 140 Links chain with master link . Tensile strength of 9850 pounds Top quality of the line roller chains Offer allowable working loads that can provide extra load carrying capability and deliver Solid rollers and bushings rovide great strength and durability under all riding condition The O-Ring lubrication system keeps it properly lubricated and prevents premature elongation and contaminants out of the pin/bushing joint