Fsa k force carbon bb30 386 x 10 cranksetthe race ready k force carbon features hollow monocoque composite crank arms mated to an oversized extruded a7050 spindle it comes complete with ceramic bb30 bearings and 100 percent cnc al7075 t6 chainrings k force light is the best of the best featuring the latest in carbon fibre technology award wining ramping and pinning for flawless shifting and amazing weight k force light is the choice of the top pro riders who count on their components to make