DuPont dry wax chain lube with Teflon is my recommendation. Every 500 miles as stated in every motorcycle owners manual as the industry standard lube interval. It's not so much for the chain's pins as it is for the exterior of the chain where it runs on the sprockets.
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Amazon.com: Finish Line Dupont Teflon Chain-Saver Dry, Wax Lubricant CS0110101: Automotive
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