Radpower Rad Mini 4 E-bike.

Radpower Rad Mini 4 E-bike – Review

Are you in search of a foldable fat-tire e-bike that offers exceptional performance and an unforgettable riding experience? Look no further than the Rad Power Bikes RadMini 4. In this review, we’ll explore the world of foldable e-bikes and discover what sets the RadMini 4 apart from the rest with its refined engineering and smooth-rolling tires.

When it comes to foldable fat-tire e-bikes, you may wonder how much their performance can truly vary. Surprisingly, the RadMini 4 proves that not all e-bikes are created equal. With its sleek design and advanced engineering, it quickly establishes its superiority over many competitors in the market.

The RadMini 4 has 20-inch wheels and a foldable frame, making it highly portable without compromising on space or convenience. It is perfect for both leisurely cruises and daily commutes.


The Rad Power Bikes RadMini 4 is available at an affordable price point of $1,499. 


Motor750W brushless geared hub motor
Torque80 Nm
Battery48V, 14Ah (672Wh) with Lithium NMC Samsung 35E cells
DisplayBacklit LCD with various indicators
HeadlightStandard Rad Power Bikes LED headlight
TaillightsIntegrated tail light with brake light
Pedal AssistIntelligent 5-level pedal assist with 12 magnet cadence sensor
Range30-50 miles+
ThrottleHalf twist throttle
BrakesTektro Aries with 180mm front and rear rotors
Frame6061 aluminum
ForkSpring fork with 80mm travel, lockout, and preload adjustment
Gearing7-Speed Shimano Altus
TiresCST Big Boat 20″ x 3″ puncture-resistant liner
Folded Dimensions28″ x 22″ x 41″
Weight68 lbs

Design & Build Quality

The design and build quality of this e-bike truly stands out in the world of foldable e-bikes. Its foldable frame allows for easy storage and portability, making it a practical choice for those with limited space or the need to transport their bike frequently. The compact size ensures that this e-bike can go wherever you go without taking up too much room.

What sets the RadMini 4 apart is the attention to engineering advancements and refined construction. When riding this e-bike, you’ll immediately notice the stability it offers. It feels solid and connected to the pavement, giving you confidence as you navigate various terrains. Whether cruising along city streets or exploring off-road trails, the RadMini 4 maintains its stability, providing a smooth and enjoyable ride.

The construction of the RadMini 4 is impressive, with a focus on quality and durability. It feels like a well-crafted piece of machinery, designed to withstand the rigors of everyday use. The engineering behind this e-bike ensures that it performs at its best, offering a stable but also reliable, and efficient ride.


This e-bike comes equipped with a user-friendly display that enhances your riding experience. The backlit LCD display provides a clear and easy-to-read interface, keeping you informed and in control. With a quick glance, you can access essential information like your current speed, distance traveled, and pedal assist level. 

Moreover, the speedometer keeps you updated on your velocity. At the same time, the pedal assist level indicator allows you to adjust the level of motor assistance to match your desired riding style and terrain. It’s like having a personal dashboard at your fingertips, giving you the power to customize your ride and make final decisions.


Regarding range, this foldable e-bike offers extended riding distances as it is equipped with a 48V 14.0Ah battery. Riders can expect to travel far and wide, as the RadMini 4 effortlessly covers approximately 31.86 miles on maximum pedal assist and an excellent 3.47 miles on the lowest pedal assist level. 

Whether you’re embarking on a daily commute or planning a leisurely adventure, the RadMini 4’s long-lasting battery ensures you can easily go the distance. Additionally, the watt meter allows riders to monitor and optimize power output throughout their ride, enhancing overall efficiency.


The RadMini 4 delivers a great performance that surpasses expectations. From its powerful motor to its exceptional handling, this e-bike excels in various aspects. At the heart of the RadMini 4 is its robust 750W brushless geared hub motor, which generates a remarkable 80 Nm of torque. This motor accelerates quickly, especially with the e-bike’s 20-inch wheels. 

When it comes to cruising at higher speeds, the RadMini 4 shines. Its smooth tires roll easily, providing a quieter and more efficient ride than many other fat-tire e-bikes. Despite its foldable design, this e-bike feels remarkably stable and connected to the pavement, offering a sense of confidence even at higher speeds.


This e-bike propels you forward with force with its robust 750W brushless geared hub motor. It is equipped with a staggering 80 Nm of torque. You can effortlessly conquer any terrain that comes its way. 

Moreover, this motor delivers quick acceleration and ensures a ride that is both exhilarating and effortless. Get ready to ignite your ride and embrace a whole new level of excitement with the e-bike’s high-performance motor at your command.


When it comes to powering your ride, the Rad Power Bikes RadMini 4 has a battery that goes the extra mile. With a capacity of 48V and 14Ah, this lithium-ion powerhouse packs a punch, ensuring you have the energy you need for your cycling adventures. 

Crafted with Lithium NMC Samsung 35E cells, renowned for their reliability, the RadMini 4’s battery delivers a consistent and stable power output. 

Suitability for Commuting and Long Rides

The RadMini 4 is an excellent choice for commuting and embarking on long rides. Its foldable frame and compact size make it easy to navigate busy city streets and store in tight spaces. 

Whether you’re hopping on a train, navigating urban traffic, or exploring new routes, the RadMini 4’s portability ensures convenience and versatility for your daily commute.

You can confidently explore new landscapes and take on challenging terrains, knowing that the RadMini 4 has the endurance to keep you going.

Electrical Components

Let’s move on to discuss this e-bike’s electrical components. There is an integrated headlight ensures optimal visibility, illuminating your path even in low-light conditions. This feature is especially valuable for commuting or riding during dusk or dawn. 

Additionally, the taillights provide enhanced visibility to those behind you, increasing overall safety on the road.

The RadMini 4’s pedal assist system is another noteworthy feature. With its intelligent 5-level pedal assist and 12-magnet cadence sensor, this system offers seamless and intuitive assistance.

As you pedal, the motor automatically adjusts its power output based on the selected level, providing a smooth and natural riding experience. Whether you prefer a gentle boost or a more vigorous assist, the pedal assist system allows you to tailor the ride to your desired level of exertion.

These additional electrical components contribute to the overall functionality and convenience of the RadMini 4. The combination of the headlight, taillights, and pedal-assist system ensures enhanced safety, improved visibility, and a comfortable riding experience. 

Brake System

The RadMini 4 has a reliable and efficient brake system, ensuring optimal control and safety during your rides. The Tektro Aries brakes, coupled with 180mm rotors, offer exceptional stopping power, allowing you to confidently navigate various terrains and unpredictable situations. 

Whether you encounter sudden obstacles or need to make quick stops, the RadMini 4’s brakes provide consistent and responsive performance. With their reliable performance and solid feel, these brakes give you the peace of mind to fully enjoy your ride.

Fenders, Fork and Frame Material

Rad mini 4 is designed with careful attention to detail, incorporating features like fenders, fork, and frame materials that enhance both functionality and durability. The fenders provide protection from splashes and debris, keeping you clean and dry during wet weather or off-road trips.

The fork, with its 80mm travel, lockout, and preload adjustment, adds an extra layer of comfort and versatility to your rides, absorbing bumps and smoothing out rough terrains.

As for the frame, it is crafted from 6061 aluminum, a lightweight and robust material that ensures the bike’s structural integrity while keeping the overall weight manageable. 

This combination of fenders, fork, and frame materials not only adds practicality and resilience to the RadMini 4 but also contributes to an enjoyable and worry-free riding experience.

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The Rad Power Bikes RadMini 4 features a reliable and versatile drivetrain system, making your rides smooth and efficient. With its 7-speed Shimano Altus gearing, you have a wide range of options to tackle various terrains and find the perfect gear for any riding scenario. 

Whether you’re climbing steep hills or cruising on flat roads, the RadMini 4’s drivetrain ensures you can maintain a comfortable pedaling cadence. The freewheel adds an extra layer of convenience, allowing you to coast effortlessly without pedaling. This combination of gears and freewheel gives you the freedom to adapt to changing conditions.

Ergonomic Comfort at Every Touchpoint

The Rad Power Bikes RadMini 4 is designed with your comfort in mind, paying close attention to the crucial contact points: the saddle, handlebar, grips, and pedals. 

The saddle, with its plush design and lifting handle, offers a comfortable seating experience, ensuring you can enjoy longer rides without discomfort. 

The handlebar, custom formed from aluminum, provides a secure and comfortable grip, allowing you to maintain control and maneuver with ease.

The durable imitation leather ergo grips enhance your riding experience, providing a soft and supportive grip for your hands. The forged aluminum folding pedals with reflectors also offer a sturdy and reliable platform for your feet, ensuring optimal power transfer with every pedal stroke. 

Final Verdict

In a nutshell, the Rad Power Bikes RadMini 4 stands out as a remarkable foldable fat-tire e-bike that offers an exceptional riding experience. With its powerful motor, smooth rolling tires, and solid construction, it exceeds expectations in terms of performance and durability. 

The RadMini 4’s range is impressive, providing ample distance for commuting or longer rides, and its intuitive pedal assist system and watt meter help optimize power output. However, there are some minor drawbacks, such as saddle comfort and reach for taller riders but they are outweighed by the bike’s overall strengths.

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