Why are some DA 77XX BBs 118mm and some 109mm?
109.5mm BB-7700 is for road double, 118.5mm BB-7703 is for triples, 109.5mm BB-7710 is NJS certified track version.
@gbj_tester started
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109.5mm BB-7700 is for road double, 118.5mm BB-7703 is for triples, 109.5mm BB-7710 is NJS certified track version.