Carbon fiber crank arms for strength and lightness. Chainrings are ramped and pinned. Weighs 578 grams on my digital scale. Ready to ride, just mount with the BB30 bottom bracket setup. Had moderate use and has good cosmetics. Full Speed Ahead SL-K Light 175 mm Hollow BB30, BCD 110, 50/34 Teeth
Returns Accepted for this item if it's within 30 Days