The redesigned Shimano 105 groupset, stepped up to 11-speed for 2015.
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Shimano has unveiled the new 11-speed evolution of its mid-range 105 groupset and a mechanical STI lever to complement its hydraulic road disc brake.
The 5800-series 105 groupset includes many features from the Japanese component giant’s flagship Dura-Ace setup, including a four-arm chainset and SILTEC-coated chain.