Shimano 105 5800 Road Bike Crankset 39/53

Shimano 105 5800 Road Bike Crankset 3953. Now with a 4 arm Hollowtech II design passed down from Ultegra and Dura Ace, the Shimano 105 FC 5800 5339T 11 Speed Crankset achieves the perfect balance of lightweight rigidity and power transfer. It's lighter and more unyielding than its previous 5 arm design and features reinforced construction around the chainring area for an even better stiffness to weight ratio. Asymmetric 4 bolt pattern is the same for both compact and standard chainrings, so one crankarm fits all chainrings sizes. The chainrings are also interchangeable with Ultegra and Dura Ace for even more versatility.