Sram sl 1150 r2c aero shiftersrams sl 1150 r2c aero shifter brings you the same shift quality and features of their carbon fibre equipped sl 1190 version but in a more affordable yet still lightweight aluminium version equipped with srams r2c return to centre shift feature theres no need to change your hand position as with every shift the lever automatically snaps back into the same position ready for the next shift this means you can stay in your most aero position maintain concent