SRAM S300 165mm 48T Black Crankset and Bottom BracketThis is a demonstration store. You can purchase products like this from Pure Fix Cycles When it comes to cranks, the SRAM S300 GXP is truly kingly. Forged from AL 6061 T6 aluminum and featuring the GXP bottom bracket, this crank is light and stiff, adding speed and shedding weight all in one. Smooth as butter and silky as a monarchs pajamas, the SRAM S300 GXP is perfect for new builds or as an upgrade to your current steed.