Offering pro-level features, the 10-speed compatible Tiagra rear derailleur gives high performance at a low price Wide link design increases rigidity and service life Advanced light action for low-friction shifting up or down the block Alloy body's and outer link leads to lower weight without compromising strength and durability 11-tooth pulleys for reduced pulley wear and chain noise Two fluorine-coated link pin bushings for low-friction performance 32 tooth max with triple, 34 tooth max with double chainset Compatible with 4700 10-speed road drive systems only .
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