The Easton EC90 SL Carbon Crankset is a lightweight and versatile pair of crankarms that is at its best on gravel or cyclocross terrain. It utilizes Race Face CINCH Technology which can accommodate 1x direct mount rings as well as 2x direct mount spiders for industry leading versatility. Being able to effortlessly change chainrings based on the upcoming course is a huge benefit for everyone, especially cyclocross athletes. Easton improved their chain retention, reducing running noise and friction which is especially useful for larger chainrings. The arms come assembled with the spindle but the bottom bracket and chainrings are sold separately. The Easton EC90 SL Carbon Crankset is perfect for the rider who wants a wide range of riding options.