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Intense study of chain and chainring wear patterns led to the radical tooth profile that lasts longer runs quieter and further improves chain retention
Diameter 28
}Ritchey WCS C220 Stem - 110mm 31
Discomfort is effectively prevented thanks to the anatomically adapted surfaces
Shimano Dura-Ace CS-7900 Ultegra CS-6700 10-Speed 11t 1st Position Cog "B Fit" 105 CS-5800 Range-12-32 Intense study of chain andShimano Dura Ace CS 7900 Ultegra CS 6700 10 Speed 11t 1st Position Cog "B Fit" for 105 CS 5800. Shimano Dura Ace CS 7800 & Ultegra CS 6700 6600 10 Speed Cassette Cogs1. 6mm cog thickness TECH SPECS Tooth Count 11
