NBPOWER USA FreeShipping !High Power e Bike kit 52v 2000W Electric Bike Conversion kit with KT 40A Sine Wave Controller,KT LCD8H Color Display, 7 Speed flywheel

Kit works well and is extremely powerful, especially with a 80a continuous battery. When I combined this kit with a 72v 80a continuous 35ah battery, unloaded wheel spun to 120kmh (74.5mph) on level 5. The different levels spin to different speeds and are well space out depending on how fast your want to go. I'm 6'3" tall and 260lbs, bike weighs a total of 78lbs and if not careful with throttle, this kit will cause the bike to pop a big wheelie which is awesome if you are an experienced rider but scary if you are a novice rider. I highly recommend dual torque arms and good hydraulic brakes as this kit is capable of taking your bike to motorcycle speeds. This kit seems well made. The wheel with hub was double layered and thick spokes used for strength. It is heavy duty and strong. Wheel appears fairly true as well. Wheel truing will be necessary at some point depending on riding conditions later on with the power this motor churns out. Controller and wiring is color coded for easy installation. I opted to not install the PAS because I didn't want the bike to get a power surge while pedaling. Assembly is easy. Make sure you keep the wiring from the hub away from your disc rotor to avoid rubbing and ensure all connections are solid. Many connections are optional depending on what you want to run. The only connections absolutely necessary to run from the controller on your bike are 2 to the front for the display and throttle and 4 to the rear hub for your hall sensor and motor. Two hall sensors are included, only one needs to be connected. If not using e-brake shutoff, ensure you are capable of shutting off the battery another way via installing a switch, turning it off through controller, or unplugging your battery in case of a runaway motor (rare). All in all a very fun kit and well worth the price paid. The cost to charge the battery is minimal (12cents to fully charge) and the savings from not having to purchase as much gas will turn out to a big win. Anne is very helpful and fast to answer any questions you have. I recommend this kit to anyone who wants a powerful e-bike.

Had a problem with the first motor that they sent me. Second motor was broken right out of the box. No power, extremely slow and loud. After much back and forth, they asked me to take it apart. I sent it back. They wanted to blame the defective motor on me and not refund me all my money. YouTube has several videos of other people with the same or similar issues. They knowingly send a defective product and then keep your money.

Originally I ordered the wrong rim for my style bike (an old Mongoose XR 200 that apparently no one else has put a rear hub drive on). Anne recommended the correct kit for my bike and refunded me the difference on top of that. It's a 48V1500W rear hub drive and I love it. Almost as fast as my 52V2000W. About 34mph and I'm a big guy(240lbs)with a 52V20ah Battery. The best thing about this kit was the wiring comes out at an angle instead of through the center like other kits. No removing pins from the connector. What a joy. I'm recommending this kit to all my biking friends. Anne is a beautiful person. A slight language barrier in the beginning but, that was my fault lol. Thanx Anne.

1. Great packaged product. Everything was well secured and easy to find. 2. Directions are OK, but not stellar. You will need to spend some time online searching and figuring out your particular setup. (Thumb throttle, twist throttle, pedal assist, battery, wires you need, etc) Some language in the instructions was a bit wonky due to translations I think. A few pictures weren't clear/too dark. 3. A bit hard to find information for some questions on their website. But I did find other useful information when trolling around there. (Torque arm specifically!) 4. It comes with 1 torque arm. I didn't know what it was. Found out while researching wiring harness. Turns out on a 2000w motor you should probably have 2 of them. So I got online and was able to get one easily for about $10. Good choice. Also, look at how to install it online. Wasn't intuitive due to the torque and pushback. 5. Twist throttle is a * bit * twitchy. But I'm ok with that. 6. Still working out how to tweak the default settings on the user display. I ran across something will searching and haven't found it yet again. Like I said, information is out there, just not always easy to find or understand. 7. The MTX rim is a strong bit of equipment. I was worried about that. Not after seeing it in person. So I have it fully installed. It works well, is pretty quiet, and has nice power. I have it mounted on a hardtail mountainbike. I'm thinking my kidneys will like it much better on a full suspension bike. Or maybe I will upgrade to a 3K motor. (grin!) So I called it a 95% solution. I think it's fair. Some of the connections weren't set up correctly. Or at least there were no directions on those wires from the motor. The color coding made it easy enough to figure out. This was my first build of an ebike from scratch. Figuring out the power supply, etc took a little research as well. I think I spent maybe 4-6 hours just taking my time to make sure I got it right. Given the right tools and wiring connections available, I figure I can repeat this in about 2 hours depending on the bike. I would definitely do it again. In fact, I might just buy a full suspension and another kit from them. It really is cost effective and not horrible to do. (But bring your multimeter!!!)

It is a square wave controller, not a sine wave controller as advertised. It is also a 20A controller which at 52 volts makes it a 1kw not 2kw controller.

If you build it right it can go 35-40mph and when my controller died they sent me another as soon as possible. This is a great brand and a great wheel would definitely buy again.

Mine broke on my second ride. She sent me a new controller but it shorted out as well.

This kit is very impressive and fast I would highly recommend it . If you want speed this is it . With this kit depending on your weight it can reach pretty close to 40 mph .