Completely redesigned for the release of Campy's new mechanical groupsets, the Campagnolo Chorus 11 4 Arm Crankset showcases a number of significant improvements. The new crank is visually striking, but the changes weren't intended to be cosmetic alone. The new crank's 4 arm bolt pattern allows for the installation of any of Campagnolo's chainring combinations 5034, 5236, or 5339 without the need to swap out the entire crank, which was necessary with the old design. Along the way, Campagnolo shaved weight while boosting rigidity, placing the new Chorus 11 crankset on a level of stiffness that eclipses even the stiffest of Campy's last generation cranks. The Campagnolo Chorus 11 4 Arm Crankset is available in 170mm, 172. 5mm, and 175mm crankarm lengths, and with 5034 , 5236 , or 5339 tooth chainring combinations.