NordicTrack is a division of Icon Health & Fitness, the largest fitness equipment manufacturer in the world. They have excellent engineering and marketing in their products but their customer service is a little squirrelly, OK a lot squirrelly. Treadmill Doctor provides both OEM and Treadmill Doctor manufactured parts in the NordicTrack treadmill parts we sell. In the case of Treadmill Doctor replacement parts we guarantee the the specifications of our parts exceed the quality and durability of the original OEM parts produced by NordicTrack and that’s why we offer a 1 YEAR WARRANTY on Treadmill Doctor built replacement parts while NordicTrack only gives you 30 DAYS! We know you can buy replacement parts for your NordicTrack treadmill from anywhere, but if you want the highest quality NordicTrack parts we suggest that you only buy Treadmill Doctor treadmill parts.