
( Brand: Rad Bikes ), ( Manufacturer Part Number: 48V750W2645-1 ), ( Part Type: Hub Bike Motor Wheel ), ( Voltage: 48 V ), ( Color: Black ), ( Compatible Bike Type: E-city Bike )
The **RAD Power 48V 750W 26" x 4.0" 2645-1 Rear Hub Motor Wheel** is a high-performance, all-in-one electric hub motor designed to deliver an exhilarating and efficient riding experience for e-bike enthusiasts and commuters alike. Engineered with precision and built to last, this compact yet powerful motor integrates seamlessly into the rear wheel of a bike frame, offering a smooth, low-maintenance, and space-saving solution for electric propulsion. With a robust **750-watt continuous power output**, this motor provides ample torque for effortless acceleration, hill climbing, and sustained speeds, making it ideal for urban commuting, off-road adventures, or long-distance cruising. The **48-volt battery system** ensures extended range and reliable performance, while the **26-inch x 4.0-inch tire size** strikes a balance between stability, traction, and maneuverability, catering to a wide range of riding styles from city streets to light trails.
What sets this motor apart is its **2645-1 hub design**, a proprietary system that combines a **gear reduction mechanism** with a **high-efficiency brushless DC motor**, resulting in a compact yet powerful assembly that minimizes weight and maximizes torque delivery. The motor s **direct-drive configuration** eliminates the need for a separate chain or belt drive, reducing friction and maintenance while enhancing durability. The **waterproof and dust-resistant construction** ensures resilience against harsh weather conditions, making it suitable for year-round use in various environments. Additionally, the motor s **smooth and quiet operation** is achieved through advanced torque sensing and regenerative braking technology, which not only enhances the riding experience but also extends battery life by recapturing energy during deceleration.
For riders seeking versatility, the **RAD 48V 750W 2645-1** is compatible with a wide range of e-bike frames and builds, thanks to its **standard 135mm axle width** and **26-inch wheel size**, which fits seamlessly into most mountain bike, hybrid, or commuter frames. The motor s **lightweight aluminum construction** ensures it doesn t compromise the bike s agility, while its **low-profile design** allows for easy installation without requiring extensive modifications. Whether paired with a step-through commuter frame or a rugged off-road rig, this motor delivers a **plug-and-play experience** that prioritizes performance without sacrificing aesthetics or functionality.
Safety and convenience are also key features of this motor, as it integrates seamlessly with RAD s **smart e-bike ecosystem**, offering features like **remote control operation**, **battery monitoring**, and **customizable power settings** via compatible apps. The motor s **built-in controller** ensures precise power delivery and protection against overloading, overheating, or voltage spikes, while its **durable rubber seals** keep internal components safe from debris and moisture. With a **lifetime warranty on the motor** and a focus on long-term reliability, the **RAD 48V 750W 2645-1** is not just an upgrade it s a **future-proof investment** for riders who demand power, efficiency, and durability in every pedal stroke. Whether you're a daily commuter looking to reduce fatigue or an adventure seeker craving extended range, this motor redefines what s possible in electric propulsion, turning every ride into an effortless and electrifying journey.
### **Pros and Cons of buying a RAD Power 48V 750W 26"x45mm Rear Hub E-Bike Motor Wheel (Model: RAD 48V750W2645-1)**
#### **Pros:**1. **High Power Output (750W)** Provides strong acceleration and hill-climbing capability, making it suitable for heavier riders or demanding terrains. The 750W rating is ideal for urban commuting, off-road use, or cargo bikes.
2. **48V Battery Compatibility** Works well with 48V battery systems, which offer a good balance between range and power. This voltage level is common in mid-to-high-end e-bikes, ensuring better efficiency than lower-voltage systems (e.g., 36V or 24V).
3. **Rear Hub Drive (Rear-Wheel Motor)** Offers better weight distribution compared to front-wheel motors, improving stability and handling. This setup is also less likely to cause chain misalignment issues common with front-wheel motors.
4. **26" x 45mm Wheel Size** The 26-inch wheel is versatile, working well on most standard e-bike frames. The 45mm tire width provides a good balance between speed and comfort, making it suitable for pavement, light trails, and urban riding.
5. **Durable and Reliable Brand** RAD Power is a well-known manufacturer in the e-bike motor industry, known for quality build and after-sales support. Their motors are often used in commercial and DIY e-bike conversions.
6. **Good for DIY Conversions** If you re building or upgrading an e-bike, this motor is a popular choice due to its availability of spare parts, compatibility with various controllers, and ease of installation.
7. **Quiet Operation** Compared to some brushless motors, this motor runs relatively quietly, reducing noise pollution during rides.
8. **Wide Compatibility** Works with most 48V battery systems (e.g., 10.4Ah, 13.5Ah, 17Ah) and can be paired with different controllers (e.g., 52V/70A, 60V/70A) for customizable performance.
9. **Good for Cargo or Heavy Loads** The 750W power makes it suitable for carrying groceries, luggage, or even small children, depending on the bike s frame strength.
10. **Aftermarket Support** Since RAD motors are widely used, finding replacement parts, upgrades (e.g., better controllers, sensors), or tuning options is easier than with niche brands.
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#### **Cons:**1. **Heavy Weight** Like most hub motors, this motor is heavy (around 10-12 lbs), which can make the bike feel sluggish when accelerating from a stop. This may require a sturdy frame to handle the added weight.
2. **Limited Off-Road Performance** While it can handle light trails, the 26" x 45mm tire is not optimized for rough terrain. For aggressive off-roading, a wider tire (e.g., 27.5" or 29") or a fat-tire setup would be better.
3. **Heat Dissipation** At 750W, the motor can generate significant heat, especially during prolonged use or steep climbs. Proper cooling (e.g., adequate airflow, quality bearings) is necessary to prevent overheating.
4. **Battery Range Limitations** A 48V battery s range depends heavily on the battery s capacity (Ah). A standard 10.4Ah battery may only provide 20-40 miles of range, which could be insufficient for long commutes. Larger batteries (e.g., 13.5Ah ) improve range but add weight.
5. **Potential for Chain Wear** Since the motor is rear-mounted, it can increase chain tension and wear, especially if the bike is ridden aggressively. Regular chain maintenance is required.
6. **Noise Under Load** While generally quiet, some users report increased noise at high power levels, which may be noticeable in urban environments.
7. **Compatibility Issues with Some Frames** Not all frames are designed for rear hub motors. Ensure your frame has a strong dropout system and can handle the motor s weight without bending or misalignment.
8. **Controller and Sensor Requirements** To get the best performance, you may need a high-quality controller (e.g., 52V/70A ) and sensors (throttle, pedal assist). Cheap or mismatched components can lead to poor performance or safety risks.
9. **Legal Restrictions in Some Areas** In many regions, 750W motors are legal for e-bikes (Class 2 or 3), but some countries or states have stricter limits (e.g., 500W or 250W). Always check local e-bike laws before purchasing.
10. **Learning Curve for DIY Installations** If you re not experienced with e-bike conversions, installing this motor may require careful wiring, torque specifications, and alignment to avoid damage or safety hazards.
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### **Conclusion:**The **RAD 48V 750W 26"x45mm rear hub motor** is an excellent choice for riders who need **powerful assistance, durability, and versatility**. It excels in **urban commuting, cargo transport, and light off-road use**, thanks to its strong motor, good weight distribution, and compatibility with 48V battery systems. It s also a favorite among DIY enthusiasts due to its reliability and aftermarket support.
However, it s **not ideal for heavy off-roading, long-distance commuting without a large battery, or riders who prioritize extreme lightweight frames**. The weight, heat management, and potential chain wear are factors to consider, especially if you plan to ride aggressively.
If you re looking for a **high-performance, mid-range e-bike motor** that balances power and practicality, this is a solid option. For **long-distance riding or extreme off-road use**, you may need to pair it with a larger battery, wider tires, or a different motor (e.g., a mid-drive or higher-wattage hub motor).
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### **Recommendation:** **Buy this motor if:**- You want a **powerful, reliable rear hub motor** for urban, commuter, or light cargo use.
- You re building or upgrading an e-bike and need a **well-supported, high-performance motor**.
- Your riding style involves **moderate hills, stop-and-go traffic, or carrying loads**.
- You re comfortable with **48V battery systems** and can handle the motor s weight.
**Avoid this motor if:**- You need **long-range capability** (consider a larger battery or mid-drive system).
- You plan to ride **aggressive off-road trails** (a wider tire or mid-drive motor may be better).
- You re on a **tight budget** (the motor and compatible parts add up quickly).
- Your local laws **restrict high-wattage e-bikes** (check 500W/250W limits).
**Best Pairings for Optimal Performance:**- **Battery:** 48V 13.5Ah or higher (for better range).
- **Controller:** 52V/70A or 60V/70A (for smooth power delivery).
- **Tires:** 26" x 45mm or wider (e.g., 27.5" x 2.25" for better grip).
- **Frame:** Sturdy, rear-wheel dropout-compatible (e.g., hardtail or full-suspension frames).
**Final Verdict:** The **RAD 48V 750W 26"x45mm rear hub motor** is a **highly recommended choice** for most e-bike builds that require **power, durability, and ease of use**. With proper setup, it delivers **strong performance without sacrificing reliability**.
Questions or concerns. Pulled From Working Bike. 30 Day Warranty. Rad Power Bikes Rear Hub E-Bike Motor Pulled From 22 x 3 Wheel.