VIVI Electric Mountain Bike for Adults - 26"/27.5" Wheels, 350W/500W Motor for Powerful Riding

Bikingbob: Need more power 48V / 500W. It is extremely easy to assemble, fold, and use. I am 6ft 225lbs. Very comfortable. Downside it takes 2 batteries for 30 mile ride. About 15m each with pedal use. Not easy to pedal without battery assistance. I have biked thousands of miles. For long distance you either need a light bike or battery assisted. I also love the no spoke look. Spokes add a lot of maintenance.

United States on Jan 14, 2023

Warren: This bike seemed like a good deal and has been worth it so far. I have concerns about whether it would be difficult to get work done on the bike (mainly the electronics aspects of it), but it has functioned well - so that is more of a theoretical concern than a real one. The bike for most people would only be comfortable with some modifications (like getting a longer post for the seat if you more than 5'5" tall) and possibly a more comfortable seat. It is also mostly put together, so not that hard to assemble, but it is slightly tricky and the instructions are not as clear as they could be. There are videos on-line about assembly of the bike that help.

United States on Jul 05, 2022

Amazon Customer: My husband says it was very easy to assemble, and you can use the tools the kit provides, but it will be that much easier if you have the standard store-bought tools. The battery life is great: I ride it several times a week to the gym I work at, and it's saving me so much on gas and it takes very little extra time to get there! Charging the battery costs me roughly ten cents, and that will last me at least an entire week!! The only "complaint": the seat is very hard and after a few minutes can become quite uncomfortable. I have a gel-padded seat installed instead and it's a lot better. Overall: I'm very happy with this purchase! Great quality for the price!

United States on Jul 05, 2022

Chris Osborne: I bought two of these. When they got to me, they were scratched and the paint was chipping off the wheels. I put them together anyway. Assembly was pretty easy. However, one of the bikes had a bearing with a ton of slop on the front wheel. There wasn't any way to adjust it out. Everything else adjusted fine. It came with all the tools needed to assemble it.

Here's where the huge problem came to light. It said the batteries needed to charge overnight so I plugged one in and after a few minutes I smelled something burning. I went and checked and the charger light was flashing red. I unplugged the battery and unplugged the charger. I plugged the charger back in and it would not stop flashing red.

I plugged the other battery in and it was the same problem. I tried to get replacement batteries from Amazon but they said they weren't available so I had to take the bikes all the way back apart and return them.

I'm glad I caught the batteries overheating before there was a fire. One of the batteries had some pretty serious overheating. The other wasn't as bad.

We rode them around a little bit without the batteries and found that the front suspension was really...

United States on May 19, 2022

Michael P.: The bike came early and it looked very nice. It was a bit difficult putting the thing together as the instructions could and should be done better. The customer service was excellent and they did try to help. The bike cables were not set up right and I had to take it to a bike shop. It was making the brakes grab. The company swiftly repaid me for the bike repair (about $90).

This is a bike for people who still want to pedal, as it is not like a motorcycle where you would want to just use the motor. It is more like an electric assist, which is perfect for me. I like to have the help going up hills or going against the wind. It folds easily, though I wish there was an obvious way to pick up the folded bike to get it into the car.

BE CAREFUL WITH THE DISC BRAKES - the first time I put the bike into my car, I accidentally touched the disc and burned my hands pretty good (I'm ok after some aloe - but that will be in another review). I had never had disk brakes on a bike, so I was caught off guard.

I would suggest finding a long velcro strap to hold the wheels together to make lifting it more convenient, something about 24" should do the trick.

For the price,...

United States on Feb 21, 2021