LSB's are a vanishing species and should be on the watch list. It takes a ton of money to stock and have qualify people working in the shop. I would suggest trying bike re-sellers, we have them in Chicago and most likely will have what you need at a reasonable price and sometimes negotiable. Look on CL, there are loads of used LSB's, pretending to be owners to save advertizing money.
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Moots VaMoots 2012-Peugeot Mixte 1974-Peugeot Mixte 1973