RadWagon 4 Electric Cargo Bike - orange
RadWagon 4 Electric Cargo Bike - white
RadWagon 4 Electric Cargo Bike
RadWagon 4 Electric Cargo Bike - orange
RadWagon 4 Electric Cargo Bike - white
RadWagon 4 Electric Cargo Bike - black
Rear rack of RadWagon Electric Bike
Free wheel orange bike frame
battery on electric bike
Bicycle seat on orange bike frame
Twist Power Assist
front tire of bike

RadWagon 4

Electric Cargo Bike

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The new RadWagon 4 250W is an electric cargo bike made to fit you! It’s the most versatile version of the RadWagon yet, featuring smaller wheels with wider tyres developed by our in-house team of experts to ensure improved stability, grip and handling, even when riding with a heavy load.

With a standover height that’s 6 cm lower than its predecessor, the lower center of gravity means it's easier to ride, easier to hop on and off, and more comfortable for your kids to climb aboard.

In black, orange or pearl, the versatility of the new RadWagon is abundant! No matter your height the telescopic seat post and adjustable handlebars makes it easy to adjust for short or tall riders. And with even more accessories to choose from, you can customise your Rad Ride to fit the needs of you and your household. Whether it's taking the kids on a trip across town, or a weekend visit to the hardware or grocery store. With a powerful 250W geared hub motor, the RadWagon 4 is in it for the long haul!

Technical specs

Key Features
RadWagon Electric Cargo Bike Version 4key feature 2

Smaller, Wider Tyres 

All-new 22” x 3" tyres designed in-house by Rad Power Bikes’ team of product engineers and manufactured by VEE Tire Co. provide a lower center of gravity. Features a custom tread pattern that provides a smooth ride over uneven surfaces, withstands bumps, and handles the elements with ease.

RadWagon Electric Cargo Bike Version 4key feature 3

250W Geared Hub Motor 

Fast durable power! Whether you’re running errands or enjoying a fun weekend ride, the RadWagon 4 250W Geared Hub Motor provides a good amount of low-end torque along with general durability. Making it the ideal option for this versatile ebike.

RadWagon Electric Cargo Bike Version 4key feature 4

Telescoping Seatpost 

Equipped with a telescoping seatpost with a 375 mm maximum length that’s capable of accommodating riders between 5'1" - 6'4".

RadWagon Electric Cargo Bike Version 4key feature 5

Quick Adjustable Handlebars

An adjustable handlebar stem allows riders to customise the reach, height, and handlebar angle (up to 80 degrees) with zero tools.

RadWagon Electric Cargo Bike Version 4key feature 6

7-Speed, 11-34 Tooth Freewheel 

A wide range of gearing at your disposal means more torque for steep climbs and relaxed cruising at top speed.

RadWagon Electric Cargo Bike Version 4key feature 7

Reflective Tyre Sidewall Striping

Extremely durable with a large total reflective surface ensuring optimal visibility during the evening or rainy weather.

RadWagon Electric Cargo Bike Version 4key feature 8

Integrated Brake Light

Powered using the main battery pack and featuring brake light functionality that activates any time the brakes are applied.

RadWagon Electric Cargo Bike Version 4key feature 9

Integrated Rear Rack

Attach panniers, platforms, or baskets and let the bike carry your cargo. Or mount a Yepp Maxi child seat, Caboose, or Deckhand to bring up to two kids along for the ride.

RadWagon Electric Cargo Bike Version 4key feature 10

Twist Power Assist

Variable walk assist that takes the RadWagon 4 up to 6 km/h. Use the twist power assist to help you take-off from complete standstill, or propel the bike when you need that extra push.

RadWagon Electric Cargo Bike Version 4key feature 11

180 mm Mechanical Disc Brakes

Tektro Aries brakes provide you with strong stopping power, even in loose or wet terrain.

48V, 14 Ah (672 Wh) with Lithium NMC Samsung 35, rated for 800 charge cycles

48V, 2 Amp Rad Power Bikes smart charger, operates on 230V AC power outlets

48V, 250W

Backlit LCD with charge indicator, speedometer, odometer, trip odometer, pedal assist level, and more

Hub Motor
250W Geared Hub Motor

Front: Rad Power Bikes branded standard LED
Rear: Integrated taillight with brake light indicator functionality

55-88+ km

Half grip twist power assist up to 6 km/h without pedaling

Water resistant connectors and wiring harness

USB Ports
Display: 5V, 1 Amp

Bike Components
Brake Calipers
Tektro Aries calliper (MD-M300)

Brake Levers
Aluminum alloy comfort grip levers with motor cutoff switch

Brake Pad Material

Brake Rotors
Tektro 180 mm front and rear

KMC Z7, 160 Link

Crank Set
46T chainring; ProWheel Solid 170 mm crank length; square-taper J.I.S.; dual-sided chainring guard

7-spped Shimano Acera

Full coverage front and rear fenders with hardware included

Rigid steel fork for 22" wheel

6061 Aluminum Mid-Step

DNP 7-speed freewheel, 11-34T

1x7 speed

Velo comfort rubber ergo grips

Swept-back, RPB custom

Semi-integrated 1-1/8"

Dual leg, spring loaded, steel

Wellgo B087 CrMo axle, forged aluminum platform with reflectors, standard 9/16" x 20 TPI threading


Shinning DB-X50, alloy, double wall, black powder coated, 36 hole

Velo plush with lifting handle

Seatpost Clamp
Quick release

Shimano SL-TX50-7R, thumb shifter, 7 speed

12 gauge, stainless steel

Satori EZ3 AHS toolless adjustable handlebar stem with built in top cap bolt.

Rad Power Bikes, custom 22 x 3"
Manufacturer: VEE Tire Co.

RadWagon Electric Cargo Bike Version 4 geometry
Recommended Rider Heights
155 cm -195 cm

Frame Size

Handlebar Height
1104 mm - 1198 mm

Handlebar Reach
550 - 635 mm

Seat Height
690 - 940 mm

Standover Height
600 mm

Total Length
2000 mm

1365.7 mm

Dropout Width
Front: 135 mm
Rear: 175 mm

Bottom Bracket Shell Width
84 mm

Seat Tube Length
345 mm

739 mm

Handlebar Width
700 mm

Crank Length
170 mm

Seatpost Diameter
31.8 mm

Max Tire Width

Bike Weight
34.8 kg

Payload Capacity
158 kg

Rear Rack Capacity
54 kg

Running Boards Capacity
13kg per side

Rad Power Bikes sizing chart

What to Measure

Your “real inseam” -- or inside leg length -- is the distance between your body where it sits on your bike saddle and the ground.

This will typically be an inch or two longer than the length of your trousers, but you’ll want to measure to be sure.

You’ll use this number on the chart to get a feel for how the different models will fit you.

How to Measure

Gather the tools needed:

  1. Medium-width hardcover book
  2. Tape measure
  3. A wall you can stand against
  4. A trusted friend or relative

Wearing your regular riding shoes and with your back to the wall, stand with your feet spread so there is about 7 inches between them - this is about the distance apart your feet would be when straddling a bike with your feet on the ground (standover height).

Place a hardcover book against the wall with the spine of the book facing upward. Slide the book upwards towards your groin until it is solidly against your body. This may be a bit awkward, but is way more comfortable -- and safer! -- than trying to ride a bike that is too big.

If you have a buddy helping you, get them to measure from the floor to the top of the book spine while you hold the book in place. If you’re going it alone, carefully hold the book in place and measure from the ground to the top of the book spine.

Display Technology
RadWagon Electric Cargo Bike Version 4 display
Battery Life
A fuel gauge for your electrons.

Pedal Assist Level
The higher the number, the more the motor will boost you when you pedal.

USB Charging
5V, .5 Amp port to charge your phone or portable electronics on the go.

Calculate how many miles you didn't drive this year and how much money you saved on gas.

Can be set to current speed, max speed, or average speed.

Shows how much power the motor is outputting at any given time.

Rad Battery Pack

The Rad Battery Pack

With over a decade of designing and building ebikes under our belts, we know that a high-capacity battery like this isn’t something you cheap out on. We designed and built our batteries using genuine Samsung 35E cells, which are some of the most energy-dense and reliable lithium-ion cells on the market today. These cells have allowed us to build an overall better battery, and at only 3.5 kg, it's one of the lightest and most energy-dense packs on any electric bike.

Kilometers per Charge
5-6 Hours
To Fully Charge
672 Wh
Total Battery Capacity

Powerful, Effective Geared Hub Motor

It’s easier than ever to haul heavy loads or multiple passengers with the RadWagon 4 geared hub motor. Accelerate quickly from a stop and brake with confidence — even if you’re riding with up to 158 kg total load.

Motor Power
80 Nm
Max Motor Torque
Hub Motor
Turn Off the Lights RadWagon Lights On