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grams
Nice. All black looks good. I have a 41t tooth chainring I'll try.
This says 44t chainring requires a 98 link chain and 39t requires 96links:
https://www.reddit.com/r/Brompton/comments/xvcoqg/brompton_chainring_conversion_to_39t_and_list_of/
So you know what chain length you are running with 42t?