sram-s900-bb30-bbright-crankset-170-53-39-bottom-bracket-not-included
sram-s900-bb30-bbright-crankset-170-53-39-bottom-bracket-not-included, Carbon fiber arms, aluminum spider, and chainrings designed for 10 speed drive trains.Carbon fiber arms, forged aluminum spiderCup/bearing set is sold separatelyQ-factor is 145mm