Used A520 (and some Wellgo equivalents) for years. Requested A520s on new bike but got M520s instead. After two years of using them you couldn't pay me to go back to single-sided.
And the M540s are better (they must be since they cost more).
@Greenbank started
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Used A520 (and some Wellgo equivalents) for years. Requested A520s on new bike but got M520s instead. After two years of using them you couldn't pay me to go back to single-sided.
And the M540s are better (they must be since they cost more).