eThirteen Extended Range Cog

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    • 40/42 tooth sprocket to extend the bandwidth of existing 10-speed cassettes
    • Replaces the 15 or 17 pinion and is mounted behind the cassette.
    • Incl. extra long aluminium screw for optimal adjustment of rear derailleur position
    • Weight: 70g (40 T.), 77g (42 T.)
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