Plus: Want to go fast or simulate the feeling of climbing a mountain? The X9i is for you. One-touch buttons let you quickly adjust belt speed (0 to 12 mph) and tilt (-6 up to an extremely steep 40 ...
A new tricked-out treadmill from NordicTrack simulates mountain trekking with its steep 40 percent incline and 6 percent decline. The X9i also comes with a technology package called iFit, which is ...
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