Sram sl 500 aero shifter setthe sram sl 500 aero shifter set brings you high quality tt shifting at a more economical price they feature lightweight aluminium shifting blades that are ergonomically shaped to fit comfortably in the hand and are equipped with srams exact actuation shifting the sl 500 shifters provide precise and ultra quick changes so you can just get on with winningfeatures material aluminium shifter type aerotime trial recommended group sram rival cable pull ratio e