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The design of the 4 arm carbon fiber cranksets that so well identify the Super Record, Record and Chorus groupsets has also found its way into this fantastic Potenza 11 drivetrain, albeit in an aluminum construction. The Potenza crankset is made with both left and right crank arms in hollow forged aluminum to keep weight to a minimum while maintaining the same performance characteristics of its carbon fiber counterparts. Potenza's 4 arm spider design makes for one single crankarm for all chainring options thanks to its unified bolt pattern which allows for all 3 chainring standards 53/39, 52/36 and 50/34 to be built upon the same crankset. Changing between compact and standard with the Potenza groupset is as easy as changing 8 bolts and two chainrings. While the 4-arm bolt pattern offers advantages in terms of practicality, the Campy Tech Lab designed it primarily with performance characteristics in mind. The 8 bolt pattern with a spider arm design that not only holds the chainring in place by way of the bolt but also supports the chainring and in doing so, increases system rigidity to the point of surpassing its direct competitors in laboratory tests. Features: New! - Hollow crankset - New design (the same shape of the high end groupsets). Both cranks in hollow forged aluminum. One single crankset for all different chainrings - All chainrings combinations capability. Ergonomics - Design and mechanical performances are aligned to Super Record crankset. Chainrings - 53x39, 52x36 and 50x34 sets to cover all market requests.