I decided to purchased the S05 full suspension electric mountain bike mainly based on price, style, and features. Since this is my first electric bike I was not really sure what to expect. I ordered it on Wednesday and it arrived 4 days later which was very fast, partially due to it being stocked in the US. It took me about an hour to unpack and assemble. Once assembled I allowed it to charge for 8 hours per the instruction. My first ride was on Monday morning, the day after I received it. At first I couldn't get the bike to turn on because the instruction didn't say you had to hold the mode button down for 4-5 seconds. Customer service was very fast and helpful so once I knew that everything worked great out of the box. I've ridden bike for about 16 miles and it works great. I got this bike mainly for exercise and the electric motor is really great when going up hills on dirt/sandy trails. The electric assist levels of 4 and 5 are really faster than I can pedal; however, you still have to pedal to keep the motor engaged in these assist modes so you do get some limited workout. Any time the motor is engaged in one of the assist mode (1-5) you can twist the throttle and go full electric without pedaling. Although the seat was comfortable at first, after sitting on it for an hour your butt may hurt. But then again, I think that's common for anyone starting to ride again after a long break LOL. Great bike that's a lot of fun!

Just got mine and put 25 miles so far so good and it goes pretty fast the first 20 miles then will start to slow the last 4 then almost pure pedal power the last mile but I I'm not light 230lb 6 foot tall and it handled me good I give the bike a B

This is my 2nd with with AOStirmotor. I had purchased an S07-b for myself and I LOVE it. My wife is 5' 3 so the only bike that will fit her is the A20. I ordered it on 1/10 and it arrived 3 days later! Installation was easy. It took me longer to assemble my S07-b, since the instructions very generic and it's the same for all their bikes. Having assembled the other bike, it was fairly simply to install this bike. I did have one slight problem with my front disc rubbing against the calipers slightly. After playing with it a little bit, I ended up replacing the washer for the tire with a slightly thicker one and it aligned the disc perfectly. Also, there's no instructions on how to turn on/off the front light. I figured out by reading online that you press the + and menu button simultaneously for 3 seconds (for my S07-b, it was holding down the + button for 3 seconds). Took the bike out for a quick spin and the bike is very agile. The shifter worked perfectly also! You simply cannot beat the price of this 500W bike. It's a great value!

I waited a long time to receive this bike, they do not accept individual bike customization. So I used paint to decorate my bike, and now it is really perfect. I will make a video to show the excellent performance of this bike.

Super distinctive! I really like this pattern.

I saw many styles of electric bicycles in a store near our home, and finally decided to buy this S03 on AOSTIRMOTOR. It is not the best bike in their store, but it is the best bike for my son. My son's height is 6'1 and his weight is 152lbs.

So I have not had the bike very long, but I know I love it. It was not a complete bicycle when I received it. It needed to be assembled. It took me about two hours to assemble it. Assembling was still a bit difficult for me, and the assembly was completed with the help of my son.

AOSTIRMOTOR's after-sales service is really good. This is my first time trying a bicycle. I don't know anything about this big guy, or even how to use a battery switch. They told me patiently how to open the meter and so on. This makes me feel differently happy at Christmas.