Shimano Ultegra FC-6603 Triple Crankset

"The Ultegra® 2-piece crankset combines the bottom bracket and crank arm into one creating a stiffer, stronger and lighter crankset. This provides you with better power transfer, which makes for more speed and acceleration. The outboard bearing design provides more stability, while maintaining an easy installation, adjustability and maintenance.Wt: 922g (w/ BB)Rings: 52/39/30Lengths: 170, 172.5, 175BCD: 130mm"