Changes
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| [https://www.sram.com/sram/urban/products/sram-e-matic SRAM E-matic], voir [http://www.pedelecforum.de/forum/index.php?threads/nabenmotoren-endlich-bergtauglich.26287/page-31], [http://www.pedelecforum.de/forum/index.php?threads/urban-beachcruiser-mit-sram-e-matic.26842/], [http://www.pedelecforum.de/forum/index.php?threads/sram-e-matic.25197/]
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