---
product_id: 204466096
title: "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"
brand: "nb power"
price: "¥221777"
currency: JPY
in_stock: true
reviews_count: 4
category: "Nb Power"
url: https://www.desertcart.jp/products/204466096-nbpower-135mm-dropout-rear-72v-2000w-rear-wheel-motor-70
store_origin: JP
region: Japan
---

# 2000W peak power 72V high-voltage system 135mm rear dropout fit 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

**Brand:** nb power
**Price:** ¥221777
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your ride, own the road — electrify your commute with NBPOWER!

## Quick Answers

- **What is this?** 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 by nb power
- **How much does it cost?** ¥221777 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/204466096-nbpower-135mm-dropout-rear-72v-2000w-rear-wheel-motor-70)

## Best For

- nb power enthusiasts

## Why This Product

- Trusted nb power brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Power Boost:** 2000W rear hub motor delivers thrilling speeds up to 75 km/h, perfect for conquering any commute or trail.
- • **Durable Ride-Ready Build:** MTX33/39 double-wall alloy rims with disc brakes ensure rugged reliability and safety on every terrain.
- • **Precision Control & Info:** Multifunction SW900 LCD display offers real-time speed, battery status, and 5-level pedal assist for smart riding.
- • **Custom Voltage Flexibility:** Dual-mode 45A sine wave controller supports 48-72V batteries, letting you tailor performance to your ride style.
- • **Fast USA Shipping & Support:** Stocked in Los Angeles warehouse with 1-year warranty and responsive customer service to keep you rolling.

## Overview

The NBPOWER 135mm Dropout Rear 72V 2000W Electric Bike Kit transforms your bike with a high-torque rear hub motor capable of speeds up to 75 km/h. Featuring a robust 72V 45A sine wave dual-mode controller and a multifunction SW900 LCD display, it offers customizable voltage settings and real-time ride data. Built with durable MTX33/39 double-wall alloy rims and disc brakes, this kit ensures safety and performance. Ready to ship from the USA with a 1-year warranty, it’s designed for serious riders seeking power, precision, and reliability.

## 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 ; https://www.desertcart.com/dp/B07RXCSZVV?ref=myi_title_dp https://www.desertcart.com/dp/B078XBCKBW?ref=myi_title_dp if you have request ,when you order it ,please you tell me your request that you need by by Email (sqma1001@hotmail.com), 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,

Review: Good kit, great company - 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.
Review: 3 years 600 hard off road miles later. - 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.

## Features

- 72v 2000W rear hub motor(Rear dropout :135mm) with MTX33/39 Double-wall alloy rims(disc brake )
- 48-72V Dual mode 45A 18 mosfets sine wave 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
- we have this 2000W Ebike kit in our USA Los Angeles warehouse

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07S1S5418 |
| Best Sellers Rank | #176,227 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #490 in Adult Electric Bicycles |
| Brand | NB POWER |
| Brand Name | NB POWER |
| Color | 26inch Rear |
| Customer Reviews | 4.2 4.2 out of 5 stars (166) |
| Date First Available | May 20, 2019 |
| Horsepower | 1999.98 Kilowatts |
| Included Components | Charger, Electric Bike |
| Item Dimensions LxWxH | 15 x 15 x 22 inches |
| Manufacturer | niubo power |
| Part Number | NBP-KT-2000KW |
| Product Dimensions | 15"W x 22"H |
| Size | 26inch |
| Speed | 75 Kilometers per Hour |
| Voltage | 72 Volts |

## Product Details

- **Brand:** NB POWER
- **Horsepower:** 1999.98 Kilowatts
- **Product Dimensions:** 15"W x 22"H
- **Speed:** 75 Kilometers per Hour
- **Voltage:** 72 Volts

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/51N2VtOs1tL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: will a 52v 13ah battery work well with this kit?**
A: It should work, the only thing it will drain your battery faster and you'll have a bit less torque than you will with a 72v battery

**Q: Why is it advertised as a 2000w kit when 72vX45A=3240 watts?**
A: The 2000w is the continuous wattage the motor can handle without burning up, the 3240 is the peak wattage, this is the wattage the motor will use when you start moving or are going up a steep hill.

**Q: Will a 72V 17Ah battery work with 2000w kit? How far will it go?**
A: Yes,sir
Your battery can work with this 2000W Ebike kit;the cycling distance is related to the speed and battery capacity;
If you have further problem or needs, please contact me by Email( sqma1001@hotmail.com);
we ship the Ebike kit by FedEx Express, it takes about 7-9days ;

**Q: Will this work on a old school xtr v-brake system**
A: If your bike is V-brake , need change to the rim style ,this link rim only be used for disc brake ; 
If you have further problem or need , please you contact me by Email (sqma1001@hotmail.com), My WhatsApp account is +86 13401536906; China

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good kit, great company
*by J***E on April 22, 2022*

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.

### ⭐⭐⭐⭐⭐ 3 years 600 hard off road miles later.
*by M***Y on August 4, 2025*

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.

### ⭐⭐⭐⭐ Kit works but has room for improvement
*by A***R on May 1, 2025*

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

## Frequently Bought Together

- 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
- EBIKELING Universal Torque Arm Conversion Kits for Electric Bicycle, EBike Front or Rear Hub Motors and Mid Drive e-Bike Tool for Maintenance, 6 pc Ebike Accessories

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-18*