campagnolo-record-ultra-torque-175mm-53-39-carbon-crankset-bottom-bracket-not-included
campagnolo-record-ultra-torque-175mm-53-39-carbon-crankset-bottom-bracket-not-included, Full Carbon crank arms and spider are hollow for maximum stiffness and minimal weight. Utilizes USB ceramic ball bearings. Light weight hard anodized alloy chainrings and alloy chainring bolts. Utilizes Campagnolo's Ultra-Torque crank system.Features Campagnolo X.P.S.S. (eXtreme Performance Shifting System) featuring geometrically optimized chainring teeth. Optimized when mated to a full Campagnolo drivetrainUSB ceramic bearings increase smoothness and decrease rolling resistance, weight and the need for maintenance. USB bearings are 50% smoother than standard Campagnolo bearingsDouble standardized bolt circle diameter allows for use of standard, mid-compact and compact chainringsUltra-Torque axles couple together in the middle of the BB shell via a Hirth Joint that self centers the crank. This results in a very light weight and stiff system that transfers power to the pedals without power lossUltra-Torque system have both drive and non-drive side bearings pre-installedRequires use of Ultra-Torque bottom bracket cups