CNC-machined Tapered Headtube: Compatible with 1 ¼” to 1 ½” tapered steerer tubes. By machining the inside and outside of the tube, weight is saved and envying compliments are abound. Perfectly Crafted Miters and Welds: Form meets function. A weld’s purpose is to join tubes while maintaining all of their initial strength. These welds are strong and stunningly gorgeous. CNC-machined Kobe Slider 142×12 Dropouts: These patented dropouts are precisely CNC machined to achieve unparalleled strength-to-weight, and in a small package. Simply the best belt-compatible dropouts in the world. Through axles front and rear, with the option to run a rear derailleur capable dropout slider. Gates CenterTrack Belt Drive: Compatibility with a chain or with the next-generation Carbon Drive System. Unique, super-strong, carbon-reinforced polyurethane system that requires no lube and provides a nearly silent ride. CenterTrack is stronger, lighter, more compact, and better at shedding debris than chains.