SL-K Light ABS BB386EVO road crankset features hollow carbon fiber arms for amazing stiffness and low weight. The adaptable BB386 EVO 30mm spindle will fit a wide variety of frames with a range of BB standards. SL-K Light ABS BB386 EVO uses FSA’s Asymmetric Bolt Standard, with four bolts. Choose from 44, 42, 40, 38, 36 gearing options. The unidirectional carbon finish, updated graphics, and concealed chainring bolts make the SL-K crankset look as fast as it is stiff.