NB Power 72V 2000W Rear Hub Review: Specs, Pros and Cons
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This nb power 72v 2000w rear wheel review covers a conversion kit designed for high-speed builds. The system centers on a 2000W rear hub motor paired with a 72V battery voltage requirement. It includes an SW900 display for control and a 7-speed freewheel for gear shifting. The wheel itself uses MTX33 or MTX39 double-wall alloy rims. While the kit ships in a 72V configuration, the controller supports 48V to 72V input. You can adjust the voltage settings directly through the display interface. This setup targets riders seeking significant power upgrades for their existing frames.
What stands out
- 2000W rear hub motor for strong acceleration
- 72V nominal battery voltage with 48-72V controller flexibility
- SW900 multifunction display for system monitoring
- MTX33/39 double-wall alloy rims for durability
- Includes 7-speed freewheel for gear range
Who it fits
Good fit for
This kit suits riders who want a powerful, no-compromise conversion. The 2000W motor and 72V system deliver substantial torque and top speed. You will appreciate the SW900 display if you prefer detailed data over simple lights. The dual-mode controller allows you to tweak voltage settings for different riding conditions. It is ideal for those with compatible 24-inch frames who want to maximize performance without buying a new e-bike.
Who should skip it
You should look elsewhere if you need a plug-and-play solution. This is a conversion kit, not a complete bike. You must have the mechanical skills to install a rear hub motor and wire the controller. The 72V system requires compatible batteries and chargers, which are not included. If you prefer lightweight components, the heavy hub motor and dual-wall rims may feel cumbersome. This option is not for casual commuters seeking easy assembly.
Verdict: The NB Power 72V 2000W rear hub motor kit offers serious power for those willing to handle a complex installation. It is best for experienced builders who want high-speed performance and customizable voltage settings.
Key specs explained
Motor Power: 2000W
This rating indicates the motor can deliver 2000 watts of power. You will notice strong acceleration and the ability to climb steeper hills with ease. This power level suits riders who want high speed and torque. It is significantly more powerful than standard 500W commuter kits. Check local laws to ensure this output is legal for your area.
Battery Voltage: 72V
The system requires a 72-volt battery pack to operate correctly. Higher voltage generally provides better efficiency and sustained power under load. You must ensure your battery matches this requirement to avoid damaging the controller. This setup is distinct from common 48V systems. Verify your battery compatibility before purchase to ensure proper integration with the motor.
Wheel Size: 24 Inch
The motor is built for a 24-inch wheel frame. This size is common on folding bikes and certain youth models. You need to match this diameter to your current bike rim. The kit includes MTX33/39 double-wall alloy rims for durability. Confirm your bike uses 24-inch wheels to ensure the motor fits the dropout spacing and tire clearance properly.
Display: SW900
The kit includes an SW900 multifunction display for control. This screen lets you monitor speed, battery level, and assist modes. You can adjust settings directly from the handlebars. It also supports voltage modification for flexibility. This interface is a standard choice for powerful conversion kits. It provides clear feedback on your riding status and system performance.
Design and Build Overview
According to the listing, this kit uses MTX33 or MTX39 double-wall alloy rims. This construction choice prioritizes durability over weight savings. Double-wall rims provide a stronger structure for the 2000W motor’s torque. You should expect a heavier wheel assembly compared to lightweight road bike components. The finish is standard for conversion kits, focusing on function rather than aesthetics.
The layout centers on a 24-inch rear wheel, though other sizes like 27.5-inch and 29-inch are available. This size affects handling and ground clearance. A 24-inch wheel offers a lower center of gravity, which can improve stability at speed. However, it may reduce rollover capability over rough terrain compared to larger wheels. The rear dropout width is specified as 135mm, which is standard for many mountain and hybrid frames. You must verify your bike’s frame compatibility before installation.
Controls are managed via the multifunction SW900 display. This unit allows you to adjust settings and monitor performance. The listing notes that while the standard set is 72V, the controller supports 48V to 72V. You can modify the voltage directly on the display. This flexibility lets you adapt the build to different battery configurations. The system includes a 7-speed freewheel, giving you gear options for varying speeds and loads.
Setup and everyday use guide
Installing this kit requires fitting the 2000W rear hub motor into a frame with 135mm rear dropouts. The wheel size is 24 inches, so you must ensure your bike frame accommodates this specific diameter. The system includes MTX33 or MTX39 double-wall alloy rims, which are standard for this build type. You will need to mount the controller, which houses 48-72V 45A components with 18 MOSFETs, into the provided controller bag. This bag helps protect the electronics from weather and debris during rides.
The setup involves connecting the motor to the controller and installing the multifunction SW900 display. This display is your primary interface for controlling the bike. It allows you to adjust settings and monitor performance. The kit comes with a 7-speed freewheel, giving you mechanical gear options to manage speed and torque. This is useful for varying terrain and battery conservation.
A key feature for setup is the controller voltage flexibility. While the standard kit is set to 72V, the controller supports 48V to 72V. You can modify the voltage setting directly through the SW900 display. This means you can adapt the kit to different battery packs if you choose not to use a 72V battery. Daily use involves managing the high power output via the display. You will rely on the 7-speed gears to maintain efficient riding speeds. The double-wall rims provide the necessary durability for everyday commuting or recreational riding. Ensure all electrical connections are secure before your first ride.
Before You Buy This Kit
You need to verify your bike frame has 135mm rear dropouts. The wheel size is 24 inches, so you must ensure your frame accommodates this diameter. You will also need a 72V battery, as the controller supports 48-72V but the kit is standard 72V. The SW900 display allows you to modify voltage settings. This is a conversion kit, not a complete e-bike. You must source your own battery, throttle, and brakes. The MTX33 or MTX39 double-wall rims are durable but heavy. You should expect a heavier wheel assembly. Regular maintenance includes checking spoke tension and brake alignment. This option suits riders who want high speed and torque. It is significantly more powerful than standard commuter kits. You should compare this against full e-bikes for weight and integration. Full bikes offer better balance and weather protection. This kit offers customization but requires mechanical skill. You should only choose this if you have the tools and space to install it safely. Consider the extra weight when carrying your bike upstairs.
Check before you buy
- Confirm frame has 135mm rear dropouts.
- Ensure frame fits 24-inch wheels.
- Source a compatible 72V battery.
- Check if you have installation tools.
- Verify brake rotor compatibility.
The product at a glance
NB Power 72V 2000W Rear Hub Motor Kit
Best for: Steep hills and heavy loads
- Motor Power
- 2000W
- Battery Voltage
- 72V
- Wheel Size
- 24inch
View on Amazon: NB Power 72V 2000W Rear Hub Motor Kit Affiliate link
This kit features a 2000W rear hub motor designed for 24-inch wheels. It operates at 72V but includes a controller that supports 48V to 72V input. The setup comes with an SW900 display and 7-speed freewheel. You get MTX33/39 double-wall alloy rims and a 45A controller with 18 MOSFETs. This configuration suits riders seeking high power output for steep terrain or heavy loads.
Pros
- 2000W rear hub motor for strong acceleration
- SW900 multifunction display with voltage adjustment
- 48-72V compatible 45A controller with 18 MOSFETs
- MTX33/39 double-wall alloy rims for durability
Cons
- 24-inch wheel size limits compatibility with standard bikes
- Requires specific 135mm rear dropout spacing
- No mention of included battery or charger
Good fit if
- You need a high-power motor for steep hills
- Your bike frame has 135mm rear dropouts
- You prefer a 24-inch wheel setup
Skip if
- You require a standard 26-inch or 700C wheel
- You want a complete kit with battery included
- Your bike frame uses 100mm or 135mm thru-axle
Verdict: NB Power 72V 2000W Rear Wheel delivers substantial torque for steep climbs. It fits riders with 24-inch wheels and 135mm rear dropouts who need raw power.
Specifications side by side
| Spec | NB Power 72V 2000W Rear Hub Motor Kit |
|---|---|
| Motor Power | 2000W |
| Battery Voltage | 72V |
| Wheel Size | 24inch |
| Color | 24inch Rear |
Frequently asked questions
What wheel size does the NB Power 72V 2000W rear hub use?
This kit uses a 24-inch wheel size. You must ensure your bike frame can accommodate this specific diameter. The listing specifies the color as 24-inch Rear, confirming the rim dimension. Check your frame clearance before purchase to avoid fitment issues with larger or smaller wheels.
Does this motor fit frames with 135mm rear dropouts?
Yes, the NB Power 72V 2000W Rear Hub Motor Kit is designed for frames with 135mm rear dropouts. This standard spacing allows for a secure installation. You need to verify your bike has these dropouts before buying. It is not suitable for thru-axle or wider spacing frames.
What is the maximum power output of this rear hub motor?
The motor delivers 2000W of power. This rating provides substantial torque for steep climbs and heavy loads. You will notice strong acceleration from this power level. It is designed for riders who need raw power for high-speed builds or challenging terrain.
What battery voltage is required for this kit?
This system requires a 72V battery voltage. The controller supports 48-72V, but the motor is optimized for 72V operation. You must provide a compatible 72V battery pack. Using the correct voltage ensures the motor delivers its full 2000W potential safely.
Is this kit suitable for steep hills?
Yes, it is best for steep hills and heavy loads. The 2000W motor delivers substantial torque for steep climbs. You can expect strong performance when carrying heavy loads or riding uphill. This power level suits riders who prioritize torque and speed over efficiency.
What type of rims are included in this kit?
The listing indicates the kit uses MTX33 or MTX39 double-wall alloy rims. This construction prioritizes durability over weight savings. Double-wall rims provide a stronger structure for the 2000W motor’s torque. You should expect a heavier wheel assembly compared to single-wall options.