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rd-rx800-gs

  1. General Cycling Discussion
    With the diversification of road cycling and the growth of gravel and multi-surface riding, Shimano has responded with the introduction of the new Ultegra RX rear derailleur with chain stabilizing technology. httpv://www.youtube.com/watch?v=3uGEtC6gjac The new RD-RX800/RX-805 rear derailleurs...
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