The K-EDGE Sigma Stem Mount is a great upgrade solution for cyclists who prefer their computer above the stem. Mounting off of the steerer tube, the mount replaces a standard 5mm spacer and is locked securely in place by the top cap compression system. The fixed version is recommended for zero degree or negative degree stem angles. Can also be used with positive degree stems if additional spacers added (5mm to 10mm) above the stem. Designed with mountain biking in mind, the K-EDGE Stem mount is also ideal for much more including cyclocross; triathlon; bike touring; or if you simply prefer this position for your computer.