FSA K-Force Light MTB Double Crankset 2009: Extra lightweight double chainring crank with state of the art bladder molded hollow carbon monocoque arm/spider. Features FSA ceramic cartridge bearings with smoother, lighter balls. 24mm CrMo spindle fixed into drive arm. MegaExo bottom bracket with oversized external alloy bearing cups. Double 29/44t (4-bolt 94BCD) CNC 7075 rings with ramps/pins. Includes 7075 Torx T-30 chainring bolts. Superlight at 740g with BB. Updated red and white K-Force graphics.