Full Suspension. Full Performance.Top-of-the-line components and the most powerful torque-sensing mid-drive motor in the industry makes the Juggernaut Ultra FS Pro 3 the best-built full-suspension electric bike on the market. Now available with an optional range extender battery to add on additional range! New to this version is a rear triangle wide enough to support 4.8" tires! Maximum TractionWith a quality FS system, both wheels stay connected with the ground. That means better handling and higher speeds on tough terrain. This bike is built for the trail.