Contrex Mountain Bike 26 Inch Wheels, 21 Speed Genuine Shimano Shifter Kit, Lightweight Aluminum Frame Trail Bicycle with Suspension Double Disc Brake, for Men Women Adult

Firstly, assembling this bike was a dreadful experience; if you purchase this bike DO NOT put the metal rod seat holder into the bike without the seat clamp or seat itself attached. I did this and the rod got stuck inside the bike and I needed to buy WD-40 and a long pair of pliers and with all my strength was able to pull it out. After getting it out, actually attaching the seat itself is a pain, as the adjustable feature (seat tilting up and down) does not lock into place so I have yet to actually sit on the bike and pedal because the slightest bit of weight tilts the seat completely upwards. After about a week of use, the bolts holding the seat in place are rusted and are unable to be tightened because the metal has stripped away. In addition, if you would like to alert your entire town that you are braking, this is the bike for you! After dousing the brakes with WD-40 multiple times, every time I slow to a stop there is about a ten second interval where it sounds like I'm opening an old creaky door in a haunted house which is extremely embarrassing to use in a college town. Also, shifting gears on this bike is very unpredictable. Whether up or down shifting, it feels like your bike is going to collapse and never actually shifts when you want it to do so. For example, if I want to downshift one, I usually end up downshifting twice and back up one or else the gears make a churning sound and my pedals almost slip out from under me. Finally the seats themselves: unbearably uncomfortable. After literally just sitting on the seat after the first day, my butt and crotch were crying with pain.The reason I gave this bike a 2 star and not a one is that it still functions as a regular bike as in the bare minimum of the wheels turning and the handlebars steering. For reference, I am a 6'3", 210 lb male so the bike was a tad smaller for my frame but is still somewhat usable. In conclusion, you're probably better off spending a little extra for literally any other bike because this one is miserable to use.Update: The entire left pedal fell off today, like the entire thing not just the foot part, so I've down-graded my rating to a one star because the bike is actually not functional anymore. Had to buy a new seat for it as well and didn't even get to test it for more than a day. What an absolutely pathetic bike.

I have been using the bicycle now for approximately a week, as part of my daily exercise routine. Assembly of the bike was easy with only having to attach the pedals, seat and handle bar. There was some confusion in untangling the cables attached to the handle bar and determining which way the front fork faced; however after a few trial & errors, I was able to get it to fit; AND REMEMBER to tighten all the bolts to the fork and handle bar. I didn’t and got a big surprise on my maiden ride down my driveway; and have a few hard reminders on my knee. The bicycle appears to be a good solid product, well made. It is a little bit heavier than my older Gary Fisher (bike) but is more comfortable on the handle bar. Minor adjustments for proper seat height and disk brakes will be required. In my initial ride, noticed that my front wheel was not "free-wheeling" and discovered that I had not centered the front wheel correctly. After proper centering and adjustment to the disk brake, the bike coasts along nicely, giving me a smooth comfortable ride.PS: The User Handbook is easy to understand; no grammatical errors noticed. Plus the video link using the UPC Bar Code link is nice for those wanting visual reinforcements.

This bike was fairly easy to assemble compared to others I've built, and it performs very well for the cost.The seat that comes with it is just barely tolerable once you've put on the gel attachment, and the front tire bent quite a bit after riding off a short curb.Overall it's a good value, and just needs a better seat

I bought this bike to convert to an ebike. I also purchased the Bafang BBSHD kit to install on it. It takes the 68mm bottom bracket mid-drive motor mount. Overall, everything worked well. The bike is built well and the size is great to convert into a hybrid commuter/occasional off-road ebike. My only dislike is on the brakes. They are not easy to get adjusted so they don't rub. Even when you get them adjusted, they don't seem to have much stopping power. I plan to upgrade to hydraulic brakes in the near future.

I ordered this bike for my grandson after comparing price, quality and features. I particularly liked the Disc brakes ( compared to the Y (type) brakes which seem to wear out and need adjustment sooner. The bike came mostly put together and was able to be ridden within a short time. There is a QR code to link to a video for installation instructions!This company has had a few issues with their expediter and you should allow extra time for the bike to be shipped and received . They do follow up with communication. Overall, although the process of following up with them was frustrating... they did come through in the end!

The gears, shifter, brakes, and every move able part needs tweaked. I had to take this to a bike store to have everything fixed and it still has issues. Next time, I'll buy an already assembled name brand in person and only after I've tested it.

Front wheel slightly misaligned, you can hear it when you brake.

Not exactly cheap to purchase , but I had to spend extra money in a bike shop to adjust the gears . Make sure to check all the bolts on the bike before riding it. Lots of them were not torque enough.