Shimano Tiagra SL-4600 2-Speed Left Flat Bar Shifter. The Shimano SL-4600 flat bar shifter features Shimanos Super SLR technology Instant and 2-Way Release functionality and an optical gear display for clear visibility.The Super SLR design makes use of a f
Shimano Tiagra SL-4600 2-Speed Left Flat Bar Shifter. The Shimano SL-4600 flat bar shifter features Shimanos Super SLR technology Instant and 2-Way Release functionality and an optical gear display for clear visibility.
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