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NB POWER

NBPOWER 135mm Dropout Rear 72V 2000W Rear Wheel Motor, 70-75km/h 2000W Electric Bike Kit,72V 45A sine Wave Dual Mode Controller with Mutifunction SW900 Display,Electric Bicycle Conversion Kit

  • Based on 34 reviews
Condition: New
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Availability: Only 2 left in stock, order soon!
Fulfilled by Electric Power
Arrives Aug 1 – Aug 14
Order within 8 hours and 44 minutes
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Color: 27.5inch Rear


Features

  • 72v 2000W rear hub motor dropout :135mm;request your bike Rear bike inner distance reach 135mm ;Disc brake
  • 48-72V Dual mode 45A 18 mosfets sine waver controller with Bag
  • Multifunction SW900 Display ,with 7 speed freewheel
  • our kit standard set is 72V ,but our controller voltage is 48-72V ,you also can modify the voltage on Display according to your battery volatge
  • From in our USA Los Angeles warehouse

Description

New :now have some 26inch ,29inch ,28inch ,700C and 27.5inch Ebike kits in our USA Los Angeles Warehouse ,it takes about 2-5 working days if need ,please order them ASAP; We usually match 72V 20AH with 72V Charger for 72V 2000W Ebike kit ; if you have request ,when you order it ,please you tell me your request that you need by by Email (), My WhatsApp account is +86 13401536906; China Product Description Motor: 72v 2000w Electric bike rear hub motor wheel (180°C copper winding+ Best magnet ) Wheel: Sun ringle MTX33/39 Double-wall alloy rims spoke (2.6mm spokes spoked by park tool) Throttle:full twist throttle Brake :two alloy brake levers (for both side power off) Controller:72V 45A dual mode sine wave controller PAS: 1:1 PAS With 8 magnets Display: Multifunction LCD display Gear: 7 speed gears 72V SW900 Display for 2000w 72v Electric bike kit 1.Vehicle speed display function 2.Speed limit function 3. Battery capacity indicator function 4. 5-Levels assistant function 5. Time indicator function 6. Running range counter About the after-sale service 1. Our goal is customer satisfaction! 2. After you received the goods, if you do not know how to use it, please feel freely to contact nnebikes, we will try our best to deal with all problems. 3. Our company provide 1 year free warranty. Within 1 year, if product parts have problem (like fuse, BMS, case, charger), we will provide new parts for free(You need to provide strong evidence that shows these parts have been damaged), you only need to bear the freight. At the same time, we also can provide free technology consulting. 4. Within 5 days after you received the goods, if you find there are problem with goods, please contact us,

Bike Type: Electric Bike


Age Range (Description): Adult


Brand: NB POWER


Number of Speeds: 7


Color: 27.5inch Rear


Wheel Size: 27.5 Inches


Suspension Type: Dual, Rear


Special Feature: Digital Display


Included Components: Charger


Size: 27.5inch


Bike Type: Electric Bike


Number Of Speeds: 7


Suspension Type: Dual, Rear


Additional Features: Digital Display


Brake Style: Disc


Specific Uses For Product: Mountain, Commuting, Leisure


Power Source: battery


Wattage: 14400 watts


Bicycle Gear Shifter Type: Thumb


Gear Type: freewheel


Derailleur Configuration: Rear


Bicycle Drivetrain Type: Derailleur


Electric Assist Type: pedal assist


Number of Handles: 2


Wheel Size: 27.5 Inches


Size: 27.5inch


Age Range Description: Adult


Brand Name: NB POWER


Included Components: Charger


Model Name: 72V 2000W Rear Wheel Motor


Manufacturer: niubo power


Unit Count: 1 Count


Color: 27.5inch Rear


Theme: Electric Bicycle


Style Name: Mountain


Wheel Material: Alloy Steel or Aluminum


Warranty Type: 1 year free warranty


EU Spare Part Availability Duration: 1 Years


Maximum Weight Recommendation: 250 Pounds


Is Assembly Required: Yes


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 1 – Aug 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Good kit, great company Good kit, great company
Color: 27.5inch Rear
Review Image by Jesse
It's a good kit by a great company. I had some issues with a couple of the parts in my kit. However, the customer service was excellent and I got speedy replacements. I installed the kit to a Giant Talon XL Aluminum mountain bike with disk brakes. I added a few things such as 12V converter for automotive grade LED lights, a rack to mount my battery, a full frame bag, and different sprockets. I put a 52 tooth front, and 34-11 tooth rear freewheel on it. This allows low gear to pedal uphill with no electric assist, and also pedal along at a comfortable cadence up to 45 MPH. Just keep in mind you need a compatible rear derailleur and a few extra links in your chain. I would recommend similar upgrades if doing long commutes and night riding. The power is great and on the higher settings will try to wheelie if you're not careful. I paired mine with a Unit Pack Power 72V 40Ah battery. That battery is very big and heavy, makes the bike awkward to maneuver when I'm not on top of it, and required a beefy custom mount. Not the battery I'd recommend for everyone, but I wanted lots of range and it was cheap. The range is 40 to 120 miles. I'm a tall and heavy rider, so me on the bike with battery, tools, lunch, work clothes and water comes out to 330 lbs. I have lots of steep hills and it's been windy lately. Even so, a charged battery gets up to 45 MPH on a slight incline very quickly with no pedaling. This style of riding averages 40 MPH will result in only about 1 mile per Ah. If I pedal along with it and average 35 MPH, it uses 11Ah to go 20 miles on those same hills, so the range is nearly doubled this way. Now a note here, I adjusted my amperage down from 40 to 20 Amps. There was only a slight uphill acceleration loss, but the efficiency went up, and the heat buildup went way down. I tried various set points, and I recommend 20-25 Amps. I think the motor and controller will last a lot longer this way(84V for charged 72V nominal battery X 40 Amps = 3360 Watts!, way over the 2000 Watt advertised rating), and I can confirm the range for 20 Amps is improved at the same speeds. Also note, that if you intend to use this kit over 25 MPH, I strongly suggest you have disk brakes and wear protective gear. I also recommend getting your wheels trued up perfect. if they're wobbling and bouncing it's going to be really bad at high speed. I recommend this kit to anyone with a little mechanical knowledge and OK with putting in some work to get a great end result. As a motorcyclist who also cycles for exercise (since my knees aren't the best when I run a lot), this kit is a perfect in-between which lets me commute to work, get my exercise, and have fun all at the same time. ... show more
Reviewed in the United States on April 22, 2022 Reviewed in the United States on April 22, 2022 by Jesse
    • Nice Kit, Powerful Nice Kit, Powerful
Color: 27.5inch Rear
Review Image by Brian Werner
Review Image by Brian Werner
I just finished this and I've only ridden it a couple of times. I had it up to 30mph which is scary fast on a bicycle. I doubt it will hit 40 as I weigh 210 and it is a heavy frame, but I'll update this when I've ridden it more. I used an old steel frame from a cheap 20 year old Murray. I stripped it and replaced every single thing on the bike. It was not designed for disk brakes and that was the biggest obstacle. Anyone building this kit should use a hardtail mountain bike that was designed for disk brakes. I did not hook up the PAS. The control panel has a trip odometer, battery level, speed, Watt, and power level display. It has 5 power levels. Level 5 is Quick. It feels like the front wheel wants to lift when you hit the throttle. Levels 3 & 4 are good for just cruising. I like the full twist throttle better than the half twist my other e bike has, but they are both nice. I've never tried the thumb throttle. I bought the 20 amp hour battery and you can see it fits easily in this frame. It probably wouldn't fit a bike with rear suspension. I think it's a good kit with a heavy duty motor. The rear wheel drive feels better than my other front drive bike, more like a motorcycle. Sweet. ... show more
Reviewed in the United States on February 16, 2021 Reviewed in the United States on February 16, 2021 by Brian Werner
    • 3 years 600 hard off road miles later.
Color: 27.5inch Rear
Using with a 52v battery. Put this on a Vitus Nucleus VR frame. Running on some mild off road MTB trails with a few jumps. Has taken everything Ive thrown at it. Ive added magnetic liquid to help cooling though I never had a over heating problem even on the hottest days. I did put a different geared cassette on it. Good stuff. Everything is solid. The only problem I ever had was with the battery connector. The part on the actual battery where the contacts touch were melting/corroding/becoming obligated so and intermittently cutting power. I replaced the connector on the battery and its solid again. Heres to another solid 600 miles. ... show more
Reviewed in the United States on August 4, 2025 by Mr. Barry
    • Kit works but has room for improvement
Color: 29inch Rear
The kit arrived quickly with signature required. It works well and came with a decent diagram for wiring. I only needed to buy the crank removal tool to remove one crank arm to install the pedal assist sensor. This motor is very capable and I have reached 55mph on level five pedal assist. There are several areas where this kit can be improved. 1. Make sure the wheel is true before shipping (had to pay a local bike shop) 2. Offer options like replacing the brake handles (mechanical brakes) for a cruise control switch ( mechanical brake handles are pointless if you have hydraulic brakes) 3. Offer a better pedal assist sensor that is not so jerky and inconsistent on acceleration ( I would definitely lose my phone if I tried to record because the response from the pedal assist sensor is very delayed and the front wheel comes off the ground with the sudden power surge) 4. Communication can be rough with Anne and part of it is that they are on China standard time and the other issue is the language translation on amazon. 5. Need to include more zip ties and a second torque arm ... show more
Reviewed in the United States on May 1, 2025 by Anonymous Buyer
    • edit: Broke after 1 year and no support. OLD: 40MPH flat, 48 mph down hill w/ 72 volt battery. edit: Broke after 1 year and no support. OLD: 40MPH flat, 48 mph down hill w/ 72 volt battery.
Color: 29inch Rear
Review Image by Tim Smithson
NEW 1 year later: This kit was great, until it wasn't. After about 2000 miles on the odometer (which isn't crazy), I started feeling vibrating, and a few days later while riding the rear axle snapped clean off! Completely unsafe, and luckily I was going slow so I could catch myself, but otherwise would have flown off. I have reached out to support numerous times and they aren't providing any assistance. I didn't do anything out of the ordinary nor am too heavy.. but for this to break 1 year later on a critical part is unacceptable. Old positive review: I've built a few ebikes before, and if this is your first it will be tricky. There really aren't any instructions and you should have good tools and a bike stand. I knew that going in so it's no problem. I paired this with a hardtail 29er, 20 ah 72 volt battery and it rips! I'm 200 lbs and full charged can get me about 38 mph. slight downhill or lighter person easily breaks 40. Plenty of power. The main thing they could improve is with the pedal assist sensor. When you pedal a bit, it counts it as max and goes max power of that level. I guess they'd need a torque sensor or cadence should work, but it's a bit annoying for it to suddenly take off. I have over 600 miles already and it has worn the tire down but no issues. ... show more
Reviewed in the United States on September 1, 2023 Reviewed in the United States on September 1, 2023 by Tim Smithson
    • Best deal for your money
Color: 26inch Rear
This kit is the best. You couldn’t get much better than this. Other controllers I have used and motors I had would frequently burn up regardless of what I did to help cool them down. This controller and motor run so smooth and do not overheat at all. I have about 5 miles on it so far and have not had one issue yet. The controller is fully programmable through the lcd display and is very easy to understand. The wiring is very easy to understand as most all of the connections only have 1 possible connector they go to. Can’t really mess it up. As for the power, oh boy. This baby moves. With myself and batteries on this aluminum frame 26” mountain bike at approximately 250 lbs, I can easily do 33mph the entire time. The battery size and amperage output does play a big part in power and speed of the motor so make sure you have the correct battery. The more AH capacity, the faster you go. Now for the customer service. Anne has been a huge help. She was very fast to reply to emails and then to messages on what’s app. If I had any questions she always provided me with as much information and help as she could and was always so friendly. I haven’t dealt with someone so pleasant is so long, it was very enjoyable, refreshing, and just made me feel appreciated. If your looking for a project or parts, this is the place to get them from. The shipping times don’t always reflect the actual ship time. I got my kit in about 1 week. When you make your order, Anne will get ahold of you and verify your exact parts and anything else that you may need so when you get the kit, it is a direct bolt up with as little to no modification needed. You really couldn’t make it any easier. Thank you very much Anne for all of your help and I look forward to being able to work with you again in the future. Update time!!! It’s been 2 riding seasons now, after battling some battery issues and increasing battery capacity, I have found that this set up will actually do close to 45 mph without pedaling!!! Which is insane on a bike and makes you want more. I am still super satisfied with the capability of this motor and controller. It works so well it leaves me wanting more. However to much more and I’m afraid I may burn it up. Always keep power ratings at their rated level and don’t try to over run the system. If you want to go faster get the higher rated system. I have close to 600 miles on this system so far and am planning on building a side car to take my son with me to work during the spring and summer. I plan on running this set up for many years and if anything ever happens to it, I wouldn’t hesitate to buy another, however next time I may buy the higher rated system and really see what it can do. Remember however, these are bicycle parts. Most bicycles aren’t built to go that fast constantly. Take care of your bikes and make sure they are safe to travel at those speeds. ... show more
Reviewed in the United States on July 1, 2022 by Tim
    • Awesome power and acceleration Awesome power and acceleration
Color: 29inch Rear
Review Image by Jimmy
Review Image by Jimmy
Paired this kit with a 60v battery on Giant Talon mountain bike. Pulls really strong off a dead stop with no pedaling, mid range power is incredible, top speed about 40 and gets there very quickly, range about 40 miles at 20mph.
Reviewed in the United States on April 5, 2026 Reviewed in the United States on April 5, 2026 by Jimmy
    • Really good product. GREAT service!
Color: 26inch Rear
Besides a little tweaking to an older frame, motor and components went on easy enough. Engine rated for 72v battery but I opted for the 52v Hailong. I know a lot of people will say go for the bigger battery but I promise 52 was enough. Plenty of power and speed. 32mph was my top before I ran out of road Customer service was great. When I first messaged the company about some questions with the settings, I expected at least a week before hearing back..try about an hour! With the time change I was pretty surprised. Super helpful. One note I would say, when you get the large rim, look for any sharp points inside where the tube will sit. Try filing them down. Also run a couple of strips of electrical tape to help out the liner. First day I rode my bike I got a flat. ... show more
Reviewed in the United States on June 5, 2023 by Amazon Customer

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