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Do they use bronze bushings with a polished steel sleeve around the swing arm bolt? All my China bikes use rubber on the swing arm pivot. Rubber ones don't need grease except maybe to keep the bolt from rusting.
I bought a box of various Zerks from Harbor Freight and installed them in the Lifan Honda Prolink type pivots that are bronze bushings around a polished steel tube. My Zongshen uses rubber in all the prolink pivots as well as the swing arm.
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