Cross Country bikes are lightweight and fast, whether you're climbing some sweet, after-work singletrack or dominating a World Cup race-course. The bikes in this category emphasize efficiency over comfort.
XC (cross-country) bikes are designed to be quick on the uphills but sacrifice some stability on technical descents. These are the bikes of choice for XC racers, or anyone with a competitive streak. They can come in either hardtail (front suspension only) or full suspension configurations and generally have 100mm (4 inches) of travel. If you’re hunting for KOMs on Strava this is the right tool for the job.