i bought this bike a little over two years ago from my local bike shop, and i still havent had to get a tune up. I like how comfortable the bike was and how easy it was to pedal up hills and was really fast as far as wheel inertia. If i had to buy another bike i would definitley buy another trek because i had absolutely no complaints about my previous trek. Another thing i liked about buying this bike was the warranty. Its has a solid 2 year  limited warranty, and the frame has a lifetime limited warranty, immediatly i new it was worth it. To anyone considering buying a montain bike or rode bike, i would recomend the navigator cause its cheap, smooth, reliable, and looks decent as well. The only think that i though needed work or improvements was maybe the shifters and some more grippy tires. All in all this is a great bike for anyone who can reach the peddals! thanks Trek for saving me time and money!

applebabe99

San Clemente, CA