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Fibrelyte will do one if you ask nicely. It might be cheaper to swap to 5700/6700 cranks which take readily available 130mm PCD track rings
I'm sure Bikepunx would do you a stainless steel one, which would be cheap and you could tell everybody the reduced friction was a #marginalgain which outweighed the extra weight.
I didnt really know where to put this question, and didnt think it warranted a new thread, so lets try here!
I was wondering if anyone knows of a company that makes an 1/8" chainring (for track use) that would fit on modern shimano 4 bolt hollowtech II road crank such as r7000?