Introduction
Rad Power Bikes has established itself as a leader in the electric bike space, offering rugged and reliable cargo e-bikes built for work, play, and everything in between. Among their most popular options are the RadWagon and RadRunner models—five unique builds that promise to make hauling kids, groceries, gear, and more easier than ever. If you’re weighing the RadWagon vs RadRunner for your cargo e-bike needs, this comparison guide will walk you through each model’s strengths, differences, and ideal use cases. Whether you’re looking for your first cargo bike or upgrading from an older ride, this guide will help you find the perfect match.
Overview of Rad Power Bikes
Rad Power Bikes, founded in 2007, is known for offering some of the best electric bikes for utility, comfort, and performance—without breaking the bank. Their cargo models blend power and practicality with a wide range of accessories, making them favorites among families, delivery riders, and anyone needing a serious cargo hauler.
Cargo e-bikes like the RadWagon and RadRunner offer an eco-friendly alternative to cars, with the ability to haul hundreds of pounds of rider and cargo. Each Rad Power model comes with a 750W geared hub motor, a Class 2 system with both throttle and pedal assist, and frames designed to handle quite a bit of weight.
Let’s break down the lineup and see how each bicycle stacks up.
Comparison of Rad Power Cargo Bike Models
RadWagon™ 4 Electric Cargo Bike
The Rad Power RadWagon 4 is a longtail cargo ebike designed to replace your car for short trips. Built with a stretched frame and extended rear rack, this electric cargo bike is ideal for family hauling, grocery runs, and transporting kids in Yepp seats or a caboose setup.
With a 350-pound weight limit and customizable accessories like running boards and cargo racks, the RadWagon 4 is one of the most capable bikes Rad Power makes.
Key specs:
- 750W geared hub motor
- 22″ x 3″ custom tires for stability
- Class 2 throttle and pedal assist
- RadWagon 4 comes with an adjustable handlebar and seat post for riders of various heights
RadWagon™ 5 Electric Cargo Bike
Released in early 2025, the RadWagon 5 brings several upgrades over its predecessor. This model features a torque sensor for smoother power delivery, improved geometry for better comfort, and a revamped drivetrain.
The RadWagon 5 review highlights its increased stability and improved ride feel. Many say the RadWagon 5 bike feels like a more refined version of the RadWagon 4—ideal for riders prioritizing comfort and modern features.
Notable upgrades:
- Torque sensor for more natural acceleration
- Lower center of gravity for balanced hauling
- Internal cable routing and improved weather resistance
- Compatible with Rad’s full range of accessories
RadRunner™ Max Electric Cargo Utility Bike
The RadRunner Max blends rugged utility with comfort features. It’s more compact than the RadWagon, making it easier to store and maneuver. But don’t let the smaller frame fool you—this ebike can still haul plenty of cargo around town.
With hydraulic disc brakes, torque sensor, front suspension, and a plush passenger seat, it’s one of the most comfortable options in the Rad lineup. The RadRunner Max comes fully loaded with accessories like fenders, a rear rack, and running boards out of the box.
Perfect for:
- Hauling kids or passengers
- City riders who want cargo capacity in a compact frame
- Riders looking for a smooth ride with minimal setup
RadRunner™ Electric Cargo Utility Bike
The base RadRunner is a budget-friendly entry into the world of cargo hauling. While it lacks some premium features of the Max and Plus, it’s still a great bike for many—especially those looking to haul gear, ride solo, or add accessories over time.
The RadRunner’s modular frame supports a caboose, cargo carrier, or child seat, making it a flexible platform for all sorts of setups.
Core features:
- Single-speed drivetrain
- 750W geared hub motor
- Built-in rear rack for cargo or passenger seating
- Compatible with many Rad accessories
RadRunner™ Plus Electric Cargo Utility Bike
The RadRunner Plus sits between the base and Max versions. It features a 7-speed drivetrain, front suspension, and upgraded display, giving you more flexibility when riding uphill or carrying a cargo load.
Its versatility and value make it one of the best cargo options for those who want more capability without going full premium.
What you get:
- Adjustable front fork suspension
- Integrated headlight and LCD display
- Rear passenger package included
- Class 2 ebike with both pedal assist and throttle power
Specifications Comparison
Motor and Performance
In the RadWagon vs RadRunner debate, all five models come with a powerful 750W geared hub motor, delivering reliable torque whether you’re climbing hills or starting from a stop under load. The RadWagon 5 benefits from smoother torque sensor systems, making power delivery more intuitive and responsive.
While both RadWagons offer longtail cargo capabilities, the shorter RadRunners are easier to switch the bike around tight corners and urban paths.
Torque and Pedal Assist Features
Torque sensors are found on the RadWagon 5 and RadRunner Max, offering a more natural riding experience by adjusting motor output based on your pedaling force. Other models use cadence sensors, which offer a steady boost once pedaling begins but may feel less refined
Load Capacity and Cargo Space
420-Pound Weight Limit
While most models top out around 300–350 pounds, the RadRunner Max is built for serious cargo hauling with a 420-pound total weight capacity. This makes it perfect for carrying rider and cargo on a daily basis.
Cargo Rack and Rear Rack Features
Every bike includes a rear rack, but the RadWagon 4 and 5 offer the largest platforms—ideal for heavy bike cargo hauling or running boards and caboose setups for family rides. The RadRunner Max also offers ample rack space, while the base RadRunner allows modular expansion.
Use Cases and Ideal Rider Profiles
Understanding your primary use case is crucial when deciding the RadWagon vs RadRunner.
Family Cargo Bike Use
For family-focused riders hauling kids or groceries, the RadWagon 5 or RadRunner Max are excellent choices. These models support accessories like child seats, cabooses, and running boards, transforming your bike into a true family cargo machine.
Hauling Kids with Yepp Seats
Yepp seat compatibility is built into most Rad models, especially the longtail bikes like the RadWagon 4 and 5. Add a caboose for extra safety, and you’ve got a secure solution for hauling kids in style.
Utilitarian Cargo and Precious Cargo
Need to move bulky gear or precious cargo? The RadWagon 5’s upgraded frame and torque sensor make it perfect for delivery drivers or professionals needing a dependable cargo carrier.
Leisure and Recreation
RadRunner models shine here. With plush passenger seats and adjustable components, these bikes are great for joyrides, date nights, or getting around with a friend on the back.
Price and Value Comparison
Let’s evaluate the pricing and value proposition in the RadWagon vs RadRunner comparison.
Cost of RadWagon 4 vs. RadWagon 5
As of mid-2025, the RadWagon 5 is priced slightly higher than the RadWagon 4. However, with upgrades like torque sensor, better balance, and improved braking, the RadWagon 5 justifies the cost for those who want the smoothest, most refined ride.
The RadWagon 4, on the other hand, offers great value for budget-conscious riders and is still one of the best electric bikes in its class.
Additional Costs for Accessories
All Rad bikes come with basic functionality, but adding a wide range of accessories—like running boards, baskets, child seats, and cargo bags—will increase the final cost. Fortunately, Rad Power Bikes’ ecosystem ensures compatibility and easy installation.
Ride Quality and Comfort
Braking Performance with Hydraulic Disc Brakes
The RadRunner Max comes equipped with hydraulic disc brakes, offering superior stopping power. Other models use mechanical disc brakes, which are reliable but require more frequent adjustments.
Stability with Adjustable Kickstand
All bikes feature a durable, adjustable kickstand for easy parking, even when loaded. This small but critical detail makes a big difference when managing a heavy bike full of gear or groceries.
Final Recommendation
Choosing the Right Rad Power Cargo Bike for You
Choosing between Rad Power’s five cargo ebikes comes down to how you plan to use the bike. If you’re focused on family hauling or delivery, the RadWagon 5 offers the best cargo and balance. If you’re commuting short distances or want a more compact frame, the RadRunner models shine.
Summary of Key Differences
-
- RadWagon 5: Best overall for cargo hauling, families, and ride quality
- RadWagon 4: Great value for heavy hauling on a budget
- RadRunner Max: Best comfort and accessories out of the box
- RadRunner Plus: Solid mid-range option with gears and suspension
- RadRunner: Affordable and modular entry-level cargo e-bike
Best Overall Pick: RadWagon 5 or RadWagon 4?
If you’re looking for the best overall pick in the RadWagon vs RadRunner series, the RadWagon 5 is your best bet. However, if you’re watching your budget, the RadWagon 4 still offers plenty of power, a longtail frame, and tons of cargo capacity.
Whether it’s your first cargo bike or your fifth, Rad makes two of the best options on the market today. Visit your local bike shop or Rad’s online store to learn more—and happy hauling!
Frequently Asked Questions (FAQ)
The Rad Power Bikes RadWagon 4 is a robust longtail cargo e-bike with a geared hub motor, known for its stability. The newer Rad Power RadWagon 5 enhances this with a torque sensor for a more natural feel, improved geometry for comfort, and a lower center of gravity, making the radwagon 5 feels more refined.
Both the Rad Wagon 4 and 5 have a 350-pound total weight limit. While the article mentions a 420-pound limit for the RadRunner Max, the official specification for the RadRunner 3 Plus (similar to Max in payload) is a 375-pound weight limit, making it exceptional for carrying cargo or multiple passengers.
Most Rad Power Bikes models, including the RadWagon 4 and earlier RadRunners, are Class 2 e-bikes (throttle and pedal assist up to 20 mph). However, newer models like the Rad Power Bikes RadWagon 5 can be operated as Class 3 (pedal assist up to 28 mph), offering more speed for commuters.
A RadWagon 4 review often highlights its excellent stability and strong 750W motor for riding a cargo bike with heavy loads, even if it’s considered a “workhorse.” While it lacks the torque sensor of the RadWagon 5, many find that the bike is still highly capable and reliable for various hauling needs.
For new riders, the base RadRunner is often recommended as the bike for many looking for an affordable and modular entry. While all Rad Power Bikes require some assembly of this bike, the simpler features of the base RadRunner often mean a quicker initial setup compared to more accessory-laden models.
Want to explore more options?
Curious about other models? Head over to our electric bikes section to explore the exciting world of e-bikes beyond Rad Power.
You can also browse Rad Power’s complete lineup of cargo and utility e-bikes to see what’s available directly from the source.