Cannondale's One Piece Integration (OPI) technology allows bike parts to be simpler by have fewer bolts and connectors that create noise, maintenance and weight. The OPI stem is made from one piece of aluminum and is the stiffest connection to the Lefty, the stiffest fork on the market. When you combine these two pieces of technology, you get a lighter weight steering system that is more precise, more accurate, and more predictable than any other steering system on the planet. Not to mention it requires less maintenance and will last longer over time than a traditional setup. That's one of the reasons we love Cannondale.