Our standard Hinged Mount is recommended for cockpits with a vertical length of between roughly 36 - 45 inches. If you have a longer cockpit, you can order this replacement bar which is 18 inches long rather than the standard nine-inch bar that is included.
 
Note: The outer diameter of this RAM Mounts replacement bar is a shade smaller than the standard bar included with the Hinged Mount, so you may need to add a layer of two of electrical tape or other material for a proper fit where it inserts into the plastic compression nut.