SRAM Force GXP 177.5mm 53-39 Crankset, Black Rings (No Cups) One of the lightest cranks ever produced by SRAM Lightweight forged AL-66 spine Unidirectional graphite final layer for a deep and luxurious finish Hard anodized chainring finish Industry-best front shifting Bottom bracket not included 781 grams w/BB (GXP 53/39)