Campagnolo 2015 Chorus UT 36/52 Crankset

For the discerning cyclist, you're not going to find much difference in performance between this Chorus groupset and it's lighter/pricier brother the Super Record. And Campy knows this well, that's why they've dialed in the Chorus and kept the line around. Because they know there are sophisticated cyclists out there who want to experience the Campagnolo aesthetic and technical performance without breaking the bank to do so.

Crankset

Double standardized bolt circle diameter on all combinations. Meaning you can swap chainring combinations without having to get an entirely new crankset 
Hollow cranks and spider arms with Ultra-Hollow™ Technology 
Ultra-Torque™ axle 
New chainrings 
Differentiated number of pins depending on the chainring combination  
Ultra - Torque™